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Gill’s Index of G&G Articles 1934-1980

Amber

  • Spring 1943, Amber, by Briggs, p. 78, 3pp.
  • Fall 1959 A Pink Amber-Like Resin from Southern Calif., p. 337, 2pp.
  • Fall 1963, A Painted Amber, p. 87, 1p.
  • Winter 1964, Pressed Amber, p. 243, 2pp.
  • Winter 1965, Pressed Amber, p. 370, 2pp.
  • Summer 1966, Coated Amber, p. 60, 1p.
  • Winter 1967, Amberdan (Amber Imitation), p. 251, 2pp.
  • Summer 1968, Amber Fraud (Large Spider in Amber Doublet), p. 318, 2pp.
  • Summer 1969, Coated Amber, p. 67, 1p.
  • Fall 1970, Varnished Amber (to Improve Color) , p. 227, 1p.
  • Spring 1971, Amber Snuff Bottles, p. 276, 2pp.
  • Fall 1972 Amber with Many Insect Inclusions, p. 93, 2pp.
  • Winter 1972, Pressed Amber and Natural Amber, p. 116, 1p.
  • Winter 1973, Natural Amber Chips in a Plastic, p. 251, 2pp.
  • Winter 1976, Bugs in Plastic Imitation of Amber, p. 251, 1p.
  • Winter 1978, Amber from the Dominican Republic, p. 367, 3pp.
  • Fall 1978, Baltic Amber, by Gübelin, p. 66, 11pp.

Amethyst

  • Winter 1949, Amethyst Color Induced in Rock Crystal Via Cyclotron, p. 255, 1p.
  • Winter 1963, A Very Rare Star Amethyst, p. 101, 2pp.
  • Summer 1971, Inclusions in Amethyst that Look Like Space Capsules, p. 322, 2pp.
  • Winter 1977, Synthetic Amethyst from Russia, p. 365, 2pp.
  • Winter 1978, Synthetic Amethyst, p. 365, 2pp.
  • Spring 1979, Synthetic Amethyst, Currently No Test for a Flawless Amethyst, p. 151, 3pp.
  • Summer 1980, Citrine-Amethyst Quartz – A Gemologically New Material, by John I. Koivula, p. 290, 4pp.
  • Winter 1980, More News On Citrine-Amethyst Quartz, by John I. Koivula, p. 409, 1p.

Apatite

  • Summer 1962, Cat’s-Eye Apatite, p. 315, 2pp.
  • Summer 1963, Yellow Cat’s-Eye Apatite, p. 44, 1p.
  • Winter 1965, Cat’s-Eye Apatite, p. 372, 1p.
  • Summer 1966, A Cat’s-Eye Apatite of 220 cts., p. 46, 1p.
  • Winter 1972, Rare Earth Absorption Spectra in Apatite, by Anderson, p. 101, 1p.
  • Winter 1972, A 40 ct. Cat’s-Eye Apatite, p. 114, 1p.

Azurite

  • Fall 1960, Azurite and its Absorption Spectrum, p. 71, 1p.

Benitiote

  • Summer 1953, Benitoite, by Ehrmann, p. 317, 1p.
  • Summer 1963, A Beautiful 4 1/2-ct. Benitoite and a Colorless Benitoite, p. 55, 1p.
  • Spring 1968, Pink Benitoite from Calif., p. 284, 2pp.
  • Spring 1968, Benitoite Inclusions, p. 285, 2pp.

Beryl

  • July-Aug. 1935, Maxixe Beryl, p. 294, 1p.
  • Summer 1949, 40 lbs. of Beryl Found in Pocket, Brazil, p. 194, 1p.
  • Fall 1950, A 2,000 ct. Aquamarine from Brazil, p. 351, 1p.
  • Summer 1954, Inclusions in a Madagascan Yellow Beryl, by Webster, p. 60, 3pp.
  • Fall 1955, A Golden Beryl Cat’s-Eye, p. 197, 2pp.
  • Fall 1955, Aquamarine Cat’s-Eye, p. 198, 2pp.
  • Fall 1955, Star Beryl, p. 199, 1p.
  • Winter 1964, A 15.4 lb. and a 74.65 lb. Brazilian Aquamarine, p. 239, 3pp.
  • Summer 1968, Irradiated Morganite, p. 315, 2pp.
  • Spring 1970, Interesting Beryl Inclusion, p. 148, 2pp.
  • Fall 1971, Star Beryl, p. 356, 1p.
  • Spring 1972, Unusual Inclusions in Aquamarine, p. 24, 2pp.
  • Winter 1972, Dark-Blue Aquamarine-Origin Unsure, p. 111, 2pp.
  • Spring 1973, Maxixe-Type Blue and Green Beryl, by Nassau, p. 130, 4pp.
  • Spring 1973, Maxixe-Type Blue and Green Beryl, Simple Test, p. 139, 2pp.
  • Summer 1973, Maxixe-Type Beryl not Bombarded, p. 172, 2pp.
  • Summer 1977, Tarnish Seen on Faceted Beryls, p. 310, 1p.
  • Winter 1980, An Examination of Red Beryl, by Frank Miley, p. 405, 4pp.

Chrysoberyl

  • 1934, Chrysoberyl, p. 9, 2pp.
  • Winter 1937, A Grayish-Green Star Chrysoberyl, p. 130, 1p.
  • Fall 1945, A 115 ct. Star Chrysoberyl (Non-Gem Quality), by Anderson, p. 252, 2pp.
  • Spring 1949, The Origin of Alexandrite Color Change, p. 143, 3pp.
  • Spring 1949, Chrysoberyl, p. 147, 1p.
  • Fall 1953, Inclusions in Yellow Chrysoberyl, by Webster, p. 343, 4pp.
  • Spring 1954, Separating Yellow Chrysoberyl and Yellow Corundum, p. 32, 1p.
  • Spring 1959, A 45 ct., a 12 ct., and a 50 ct. Alexandrite, p. 264, 1p.
  • Summer 1960, A 4-Rayed Star Brown Chrysoberyl, p. 62, 1p.
  • Winter 1963, A Cat’s-Eye Alexandrite, p. 104, 2pp.
  • Fall 1964, Synthetic Alexandrite Made, p. 216, 1p.
  • Fall 1967, Cat’s-Eye Doublet, p. 215, 2pp.
  • Summer 1970, High-Property Cat’s-Eye (R.I. 1.76–1.77), and Absorption Spectrum, p. 184, 2pp.
  • Winter 1972, Synthetic Alexandrite, Introduced to the Market by Creative Crystals, Inc., Danville, Calif., p. 102, 3pp.
  • Winter 1972, Chrysoberyl Cat’s-Eye, Proved to be Natural, p. 113, 1p.
  • Winter 1972, Fine Cat’s-Eye Glass with Milk and Honey Effect, p. 108, 1p.
  • Spring 1973, Fine Cat’s-Eye Glass and Optic Fibers with Milk and Honey Effect, p. 136, 3pp.
  • Winter 1974, A New Synthetic Alexandrite by the Czochralski Method, p. 367, 3pp.
  • Summer 1976, A Very Rare 4-Ray Star Cat’s-Eye Chrysoberyl, p. 170, 1p.
  • Fall 1976, Alexandrite from Lake Manyara, Tanzania, by Gübelin, p. 203, 11 pp., with Bibliography
  • Fall 1976, African Alexandrites?, p. 211, 3pp.
  • Spring 1979, Natural & Synthetic Alexandrites, p. 148, 1p.
  • Spring 1980, Fiber Optic Cat’s-Eye Imitation, p. 278, 1p.
  • Summer 1980, A Giant Chrysoberyl Crystal, p. 320, 2pp.

Coral

  • Spring 1950, Coral, the Forgotten Gem, by Copeland, p. 282, 6pp.
  • Fall 1959, Black Coral of Hawaii, p. 337, 1p.
  • Fall 1960, Black Coral of Hawaii, p. 72, 3pp.
  • Summer 1962, A White Coral Substitute, p. 304, 2pp.
  • Spring 1967, Black Coral Characteristics, p. 146, 1p.
  • Fall 1967, Dyed Angel-Skin Coral, p. 209, 1p.
  • Summer 1973, A Partly Silicified Coral, p. 182, 2pp.
  • Fall 1973, Hawaiian Black Coral, by Webster, p. 196, 3pp.
  • Fall 1973, Silicified Coral, p. 206, 2pp.
  • Fall 1973, Lapidary of Black Hawaiian Coral, p. 232, 1p.
  • Winter 1974, Blue Coral, p. 369, 2pp.
  • Winter 1974, Hawaiian Black Coral, but with a Golden Sheen, p. 369, 3pp.
  • Summer 1979, An Examination of the New Gilson “Coral,” by K. Nassau, p. 179, 7pp.
  • Winter 1979, Gold Corals – Some Thoughts on Their Discrimination, by Grahame Brown, p. 240, 5pp.

Corundum

  • May-June 1934, Adamantine-Spar Brown Corundum (Rarely Asterism), p. 82, 1p.
  • Summer 1937, New black Star Sapphires Found, p. 98, 1p.
  • Fall 1939, Lined, Foil-Backed Corundum Produces Stars and Cat’s-Eyes, p. 36, 1p.
  • Winter 1944, American Synthetics Available from Linde, p. 185, 1p.
  • Summer 1947, Distinction Between Corundum and Garnet, p. 435, 1p.
  • Summer 1948, The 1,156 ct. Rough, and the 733 ct. Cut Black Star Sapphire of Australia, Owned by Kazanjian Bros., p. 57, 1p.
  • Spring 1954, Distinguishing Between Yellow Corundum and Yellow Chrysoberyl, p. 31, 1p.
  • Winter 1957, Madonna of the Star, the 545 ct. Carved Star Sapphire, Owned by Kazanjian Bros., p. 123, 1p.
  • Summer 1959, X-ray Induced Yellow Sapphires and their Detection, p. 294, 1p.
  • Winter 1959, A Star Sapphire Found in Finland, p. 356, 2pp.
  • Summer 1960, Synthetic, Colorless Sapphire as a Diamond Substitute, p. 59, 2pp.
  • Winter 1960, A Triplet to Produce a Star Corundum, p. 119, 2pp.
  • Fall 1961, Corundum in Tanzania, by Webster, p. 202, 4pp.
  • Winter 1961, A 30 ct. Corundum-Green by Day, Light Red-Violet by Night, p. 246, 1p.
  • Fall 1962, Rubies and Sapphires from Tanzania, p. 340, 1p.
  • Winter 1964, Partings in Black Star Sapphires, p. 250, 1p.
  • Winter 1968, An Inclusion in Alexandrite-Like Sapphire from Montana, p. 373, 1p.
  • Summer 1969, X-ray Bombarded Yellow Sapphires, p. 57, 1p.
  • Summer 1969, A 277 ct. Cab Star Black Sapphire, p. 59, 1p.
  • Fall 1970, A 12-Rayed Star Sapphire, p. 231, 2pp.
  • Spring 1971, A Fluorescent Dye in Treated Corundum, p. 285, 1p.
  • Spring 1972, A 3-Phase Inclusion in a Fine Purple Corundum, p. 11, 1p.
  • Summer 1972, A Gem Alexandrite-Like Corundum, p. 43, 2pp.
  • Winter 1972, Umba River Corundum of Tanzania (Ruby and Sapphire, etc.), p. 104, 2pp.
  • Spring 1973, Umba River Corundum of Tanzania (Ruby and Sapphire, etc.), p. 149, 2pp.
  • Fall 1974, Borax in Jewelry Repair Involving Corundum will Cause Surface Damage, p. 342, 2pp.
  • Fall 1974, Tiny Round Crystals that Look Like Bubbles in Corundum, p. 343, 2pp.
  • Summer 1975, A Slab with Black Sapphire Center and Altered Pinite Edge, p. 44, 2pp.
  • Fall 1975, Tiny Round Crystals that Look Like Bubbles, p. 90, 2pp.
  • Fall 1979, Some Sapphire Problems, and a 12-Rayed Black Star Sapphire p. 194, 3pp.
  • Summer 1980, Corundum Observations and Problems, p. 315, 6pp.

Diamond Localities

Africa

  • Winter 1946, The Premier and Jagersfontein Mines Reopened, p. 377, 1p.
  • Spring 1949, Kimberlite Found in the Bakanga Diamond Field, Zaire, p. 131, 5pp
  • Fall 1949, Diamond Mining in South Africa, p. 216, 4pp.
  • Fall 1950, New Diamond Discovery from the Gold Coast, p. 349, 1p.
  • Summer 1951, Diamond Mining in Tanzania, p. 76, 1p.
  • Winter 1958, Diamond Mining in Southwest Africa, p. 232, 8pp.
  • Winter 1963, The New Fincham Diamond Mine in S. Africa, p. 107, 5pp.
  • Summer 1968, Mining on the Coast of S.W. Africa, p. 292, 6pp.
  • Winter 1970, Koffyfontein Diamond Mine, S. Africa, reopens, p. 266, 2pp.
  • Spring 1971, Diamond Mining in Botswana, p. 295, 4pp.
  • Winter 1972, The Orapa Diamond Mine in Botswana Opens, p. 109, 2pp.

U.S.

  • Fall 1940, Arkansas Diamond Field, p. 109, 4pp.
  • Fall 1941, Arkansas Diamond Mine Changes Hands, p. 168, 1p.
  • Spring 1943, Arkansas Diamond Mine, p. 72, 1p.
  • Fall 1944, The Punch Jones Diamond of Virginia, p. 169, 1p.
  • Winter 1949, Another Rough Diamond Found in Indiana, p. 249, 2pp.
  • Winter 1949, Diamonds in Arkansas, p. 257, 1p.
  • Spring 1953, History of Diamonds in Wisconsin, p. 284, 2pp.
  • Winter 1957, Diamond Mining in Arkansas (historic and recent), p. 355, 8pp.
  • Summer 1959, Diamond Digging in Arkansas, p. 318, 1p.
  • Fall 1959, A 3.65 ct. Diamond from Arkansas, p. 343, 1p.
  • Spring 1960, a 6.45 ct. Diamond from Arkansas, by Harold Branch, p. 7, 3pp.
  • Fall 1961, Wisconsin Diamonds, p. 210, 6pp.
  • Winter 1961, Another Diamond Found in Arkansas (.83 ct., pictured), p. 245, 2pp.
  • Summer 1968, A catalog of the Drift Diamonds of the Great Lakes Area, p. 297, 7pp.
  • Fall 1968, p. 333, 2pp., with Large Bibliography
  • Winter 1969, An 18.20 ct. Diamond Found in Louisiana—Mounce Diamond, p. 13, 1p.
  • Fall 1977, Diamond Find in Arkansas, p. 349, 1p.

Other than Africa & U.S.

  • Winter 1942, Notes on Some Brazilian Diamonds, p. 55, 3pp.
  • Winter 1943, Notes on Diamond Mines of India, p. 115, 2pp.
  • Winter 1944, Russian Diamond Production, p. 184, 1p.
  • Winter 1948, Diamond Find in Canada, Doubtful, p. 123, 1p.
  • Winter 1949, Diamond Mining in Brazil, by T. Draper, p. 231, 12pp.
  • Summer 1950, Origin and Sources of Diamonds in Brazil, by T. Draper, p. 298, 9pp.
  • Summer 1950, Indian Diamond Pipe Described, Panna, p. 315, 1p.
  • Fall 1950, Diamond Find in Quebec (?), p. 354, 1p.
  • Summer 1951, The Diamond Mines of Diamantina, Brazil—Past and Present, by T. Draper, p. 49, 9pp.
  • Fall 1951, p. 89, 10pp.
  • Summer 1951, The Ungava Crater, Quebec, No Diamonds Found, p. 79, 1p.
  • Winter 1954, Is Borneo Becoming an Important Diamond Source?, p. 126, 1p.
  • Summer 1957, Diamond Possibilities in Colombia, p. 63, 1p.
  • Fall 1960, A 33 ct. Diamond Found in Borneo, p. 93, 1p.
  • Spring 1963, Diamond Mining in Brazil, by Draper, p. 12, 6pp.
  • Summer 1963, p. 45, 5pp.
  • Fall 1965, The Siberian Diamond Deposits, p. 342, 9pp.
  • Winter 1965, p. 377, 3pp.
  • Winter 1967, South American Diamonds and the World Diamond Market (Brazil, Guyana, Venezuela), by E. Miles, p. 226, 13pp.
  • Winter 1967, First Brazilian Diamond Dredge, p. 239, 3pp.
  • Winter 1970, The Russian Diamond Industry, by Liddicoat, p. 259, 7pp.
  • Fall 1977, Diamonds in Brazil & Venezuela, by Sinkankas, p. 337, 3pp.

Diamond Gemology

  • March-April 1934, Diamond Loupes, by R. Shipley, p. 38, 2pp.
  • May-June 1934, An Engraved Diamond, p. 75, 1p.
  • -Dec. 1934, The Multiple Source Theory of the Diamond, by S. Ball, p. 156, 4pp.
  • -Oct. 1935, Colored Diamonds, by S. Ball, p. 309, 3pp.
  • Fall 1937, The Diamond, by Briggs, p. 127, 2pp.
  • Winter 1937, p. 139, 2pp.
  • Summer 1938, The Color of a Diamond, p. 174, 1p.
  • Winter 1938, Radium-Treated Diamonds, p. 194, 1p.
  • Summer 1941, A Glossary of Diamond Terms … (Aberration-Ballas), p. 151, 3pp.
  • Fall 1941, (Bantam-Boort), p. 173, 2pp.
  • Winter 1941, (Borneo-Bubbles), p. 182, 2pp.
  • Spring 1942, (Bultfontein Mine-Clean), p. 13, 2pp.
  • Summer 1942, (Cleavage-Cutting Centers), p. 29, 4pp.
  • Fall 1942, (Cutting, History of-Dyke), p. 43, 4pp.
  • Winter 1942, (Eclogite-Fracture), p. 59, 4pp.
  • Spring 1943, (Fromesite Bort-Holland Rose Cut), p. 73, 4pp.
  • Summer 1943, (Holohedral-Interference, Color), p. 95, 2pp.
  • Fall 1943, (Intergrowth-Knot lines), p. 105, 4pp.
  • Winter 1943, (Koffeyfontein Mine-Luminescence), p. 119, 6pp.
  • Spring 1944, (Lumpy-Mill), p. 138, 3pp.
  • Summer 1944, (Miller indices-Moon of the Mountains Diamond), p. 155, 2pp.
  • Fall 1944, (Mora Diamond-Neck), p. 171, 2pp.
  • Winter 1944, (Negative Crystals-Old Mine Stone), p. 191, 2pp.
  • Spring 1945, (Onca-Orloff Diamond), p. 215, 2pp.
  • Summer 1945, (Orloff Diamond, cont.-Parting), p. 237, 2pp.
  • Fall 1945, (Parure-Perfect), p. 261, 2pp.
  • Winter 1945, (Perfect, cont.-Pigot Diamond), p. 289, 3pp.
  • Spring 1946, (Pink Diamonds-Point Naive), p. 315, 2pp.
  • Summer 1946, (Polariscope-Porter Rhodes Diamond), p. 335, 2pp.
  • Fall 1946, (Portrait Stone-Proper Proportions), p. 355, 2pp.
  • Winter 1946, (Properties-Regent Diamond), p. 379, 2pp.
  • Spring 1947, (Regent Diamond, cont.-Riviere), p. 409, 2pp.
  • Fall 1941, Diamond Color Grading, p. 162, 7pp.
  • Winter 1945, The Extreme Scarcity of Fine-Color Flawless Diamonds, p. 276, 7pp.
  • Winter 1945, The new Colorscope Grades Color, p. 286, 2pp.
  • Spring 1947, Fluorescent Diamonds, by Switzer, p. 392, 3pp.
  • Spring 1947, The Abundance and Color of Fluorescent Diamonds, by Shipley, p. 395, 6pp.
  • Summer 1947, Color Range and Form Variations in Diamonds, p. 430, 2pp., plus one color plate
  • Fall 1947, The Two Types of Single Diamond Crystal Forms, p. 455, 7pp.
  • Spring 1948, The History of Diamonds-King of Gems, by Ball, p. 18, 5pp.
  • Winter 1948, Research Lab Erected in South Africa, p. 121, 2pp.
  • Summer 1949, Radioactive Diamonds, p. 167, 4pp.
  • Summer 1950, Bombarded Diamonds, by M. Ehrmann, p. 295, 4pp.
  • Summer 1950, Sir William Crookes Treated Green Diamonds in 1914, p. 317, 2pp.
  • Fall 1950, The Diamond Research Lab, S. Africa, p. 327, 7pp.
  • Winter 1950, Recovery of Diamonds by Electrostatic Separation, p. 385, 2pp.
  • Spring 1951, Recognizing Surface Irradiated Diamonds, by Pough, p. 3, 9pp.
  • Spring 1954, Bombarded Diamonds, p. 29, 2pp.
  • Summer 1954, Testing Natural Blue and Treated Blue Diamonds, p. 35, 3pp.
  • Winter 1955, Microstructures of Diamond Surfaces, by Tolansky, p. 242, 8pp.
  • Winter 1955, The Two Types of Diamond (I, IIa, lIb), p. 255, 1p.
  • Summer 1957, Diamond Substitutes, by L. Benson (each discussed), p. 56, 5pp.
  • Winter 1957, Spectroscopic Recognition of Yellow Bombarded Diamonds, by *Crowningshield, p. 99, 7pp., with Large Bibliography
  • Winter 1957, Minor Elements in Diamonds and their Effect on Diamond Colors, p. 111, 4pp.
  • Winter 1958, Treated Diamonds Show Very Strong Radiation, p. 230, 2pp.
  • Spring 1959, Color Treating Diamonds by Neutron Surface Irradiation, Done in U.S., p. 266, 2pp.
  • Spring 1959, Treated Red, Blue and Blue-Green Diamonds, p. 268, 2pp.
  • Summer 1959, Coating Detected on a Marquise Diamond, p. 292, 2pp.
  • Summer 1959, A Diamond, Fine Brownish-Yellow by Night and Green by Day, p. 293, 3pp.
  • Summer 1959, A Simple Device to Test Blue Diamond Conductivity, p. 296, 3pp.
  • Winter 1959, Gold Mountings Break in Strong Bleach, p. 358, 2pp.
  • Summer 1960, Pink Diamonds Change Color in X-ray, p. 45, 2pp.
  • Summer 1960, An Audio Conduction Detector for Type lIb Diamonds, p. 49, 2pp.
  • Fall 1960, Green Diamonds (Radium Treated), p. 69, 2pp.
  • Winter 1960, Diamonds Burned in Fires, p. 118, 2pp.
  • Summer 1961, Natural Yellow Diamonds (Including Spectrum), p. 184, 2pp.
  • Winter 1961, Artificial Coloration of Diamonds, p. 227, 15pp., with Large Bibliography
  • Winter 1961, An Autoradiograph of a Radium-Treated Diamond, p. 242, 2pp.
  • Summer 1962, Diamond Doublets, p. 305, 2pp.
  • Summer 1962, The Surface Structure of Diamonds, p. 309, 6pp.
  • Fall 1962, Determining Origin of Colors in Diamonds, p. 344, 1p.
  • Winter 1962, Diamond Coating Techniques and Their Detection, by E. Miles, p. 355, 11pp.
  • Winter 1962, Diamond and Synthetic Sapphire Doublet, p. 379, 2pp.
  • Spring 1963, A Grayish-Yellow Type IIb Diamond, p. 24, 2pp.
  • Spring 1963, Cyclotron-Treated Diamond, p. 26, 1p.
  • Fall 1963, Orange Cyclotron-Treated Diamond, p. 82, 1p.
  • Fall 1963, Conductivity of Blue Diamonds, p. 84, 2pp.
  • Spring 1964, Diamonds Burned in Fires, p. 149, 2pp.
  • Spring 1964, A Hollow back Diamond in Closed Molded Setting to Simulate Pavilion, p. 150, 3pp.
  • Spring 1964, Pink Diamonds and their Characteristics, p. 155, 1p.
  • Summer 1964, Coated Diamonds, by E. Miles, p. 163, 6pp.
  • Summer 1964, A Cross of Diamond Doublets, p. 181, 1p.
  • Winter 1964, Twin Lines and Crystal Growth Lines, p. 252, 1p.
  • Spring 1965, “Piggy-Back” Mounted Diamonds, One Over the Other, p. 262, 3pp.
  • Winter 1965, A Natural-Color Deep Green Diamond, p. 362, 1p.
  • Winter 1965, A Natural-Color Deep Green, a Blue and a Red Diamond, p. 362, 1p.
  • Winter 1965, “Piggy-Back” of Three Layers, Not Touching (First Time Seen), p. 362, 2pp.
  • Spring 1966, Diamonds Show Discoloration After Repeated Washing in Hard Water, p. 22, 1p.
  • Summer 1966, A Rose Cut Diamond (14½ x 6mm) in Ccarved Cclosed Mmetal Ssetting Iimitating Llarge Diamond, p. 43, 2pp.
  • Fall 1967, Rare Light-Blue Diamonds, Type IIb, p. 209, 2pp.
  • Winter 1967, Brown Diamonds and their Inclusions, p. 249, 2pp.
  • Summer 1968, Radium-Treated Diamonds, p. 304, 2pp.
  • Fall 1969, Spectrum of a Natural Gray Diamond, p. 89, 2pp.
  • Winter 1969, Cyclotron-Treated Diamonds Detected Only by Microscope, p. 125, 2pp.
  • Winter 1969, An Unusual Spectrum Seen in a Yellow-Brown Diamond, p. 126, 2pp.
  • Summer 1970, A Bicolored Marquise Diamond (Outside Rim, Yellow-Green; Center Area, Medium Red), p. 182, 2pp.
  • Fall 1970, Ultra-Violet Light in D to G Color Diamonds, p. 226, 1p.
  • Winter 1970, The Facts about Diamond Imitations, p. 245, 4pp.
  • Spring 1971, Russian Diamonds, p. 285, 2pp.
  • Spring 1971, Diamond Top, Zircon Back Doublets, p. 287, 1p.
  • Spring 1971, Determining a Black Diamond Natural or Treated, p. 287, 2pp.
  • Fall 1971, Burning (Oxidizing) Rough Diamond Crystal to Improve Surface Color, p. 345, 1p.
  • Winter 1971, Diamond and Zircon (or Strontium Titanite, Spinel, etc.) Doublets, p. 375, 2pp.
  • Winter 1971, Diamonds Treated Pink, p. 380, 1p.
  • Spring 1972, A Piggy-Back Setting, p. 9, 2pp.
  • Summer 1972, A 30 ct. Black Diamond, p. 41, 2pp.
  • Summer 1972, A Large Hexagonal Rose Cut Diamond Set with Foiled Pavilion, Closed Back, p. 54, 1p.
  • Fall 1972, 25 Years of Diamond Research by De Beers Industrial Diamond Div., p. 66, 11pp.
  • Fall 1972, Diamonds Treated to Intense Yellow and Blue Colors, from Mass., p. 82, 2pp.
  • Fall 1972, Diamonds Burned in Fires, p. 89, 3pp.
  • Winter 1972, Banded diamonds and clarity; Type lIb diamonds, p. 106, 2pp.
  • Winter 1972, Diamond Doublets, p. 107, 2pp.
  • Fall 1973, Unusual Fluorescence in a Diamond, p. 200, 1p.
  • Spring 1975, An Intense Natural Canary, no Absorption Lines, p. 17, 2pp.
  • Summer 1975, A Black Diamond with a Colorless Center, p. 47, 2pp.
  • Summer 1975, A Diamond Burned in Repair Work, p. 57, 2pp.
  • Summer 1975, A “Chameleon Diamond” (Shows Color Change), Dark Yellow-Green to Yellow; 3rd seen at GIA, p. 57, 2pp. (Type l lb. Diamond May or May not Loose Conductivity when Treated.)
  • Fall 1975, An Unusual Cyclotron-Treated Diamond, Shows Color Line, p. 72, 2pp.
  • Winter 1976, Cape Diamond Painted Blue, p. 124, 2pp. (See also Summer 1976, p. 183, 1p.)
  • Spring 1976, Cubic Zirconia, A New Diamond Imitation, p. 143, 2pp. (See also Spring 1976, p. 154, 2pp.)
  • Summer 1976, A Cyclotron-Treated Emerald-Cut Green Diamond, p. 171, 2pp.
  • Summer 1976, A Diamond Turned Yellow by Washing in Hard Water, p. 182, 2pp.
  • Summer 1976, A Complete Spiral Scratch on a Diamond’s Table, of Unknown Origin, p. 185, 1p.
  • Fall 1976, Zirconium Oxide, a Diamond Simulant, p. 221, 2pp.
  • Winter 1977, Cape Lines Missing in “True Canary,” p. 235, 1p.
  • Summer 1977, Notes on Treated Pinks, Blacks, and Brown IIb’s, p. 306, 2pp.
  • Summer 1977, Conchoidal Fracture in Diamonds, p. 309, 2pp.
  • Fall 1977, Cubic Zirconia; Moss Patched on the Surface of Radium Treated Diamonds, p. 345, 3pp.
  • Winter 1977, More on Cubic Zirconia, p. 361, 3pp.
  • Winter 1977, Colors of IIb Diamonds; a Light Greenish-Blue IIa Diamond; an Intense 5400Å Line in Intense Yellow-Brown Diamond, p. 363, 2pp.
  • Summer 1978, Cubic Zirconia (Show Colored Material), by R. T. Liddicoat, Jr. and J. I. Koivula, p. 58, 3pp.
  • Fall 1978, Laser Reflection Patterns in Diamond and Diamond Substitutes, by Eunice R. Miles, p. 77, 8pp.
  • Fall 1978, The New Gem Diamond Testing Pen, by Rick Shaw, p. 92, 4pp. (Also Shows Water Drop Test) (See also Jour. of Gemmo., July 1981, p. 446, 3pp.)
  • Winter 1978, The Ceres Diamond Probe Test for Diamond Substitutes, by K. Nassau, p. 98, 6pp.
  • Winter 1978, Distinguishing Diamond from Cubic Zirconia, Old and New Tests, by K. Nassau, p. 111, 7pp.
  • Winter 1978, Two Interesting Treated Diamonds (Radium Treated Color a Dark Tourmaline-Like Yellowish Green), p. 125, 2pp.
  • Spring 1979, Cubic Zirconia, Notes, p. 148, 3pp.
  • Spring 1979, Testing Blue and Pink Diamonds in the Spectroscope, p. 150, 1p.
  • Spring 1979, Coated Cubic Zirconia Passed Ink Test, p. 150, 1p.
  • Spring 1979, Using Cryogenics to Test Green Diamonds and Treated Brown Diamond with a 6400A.U. Line, p. 151, 1p., and see p. 154, 1p.
  • Spring 1979, Green Diamond Owes Color to Graining, p. 154, 1p.
  • Spring 1979, Fashioning Cubic Zirconia, by Bill Kerr, p. 155, 3pp.
  • Fall 1979, High Color Small Diamonds, p. 200, 2pp.
  • Fall 1979, Size and Diamond Grading Color, p. 200, 3pp.
  • Fall 1979, The Size and Weight of Diamond and Diamond Imitations, by K. Nassau, p. 203, 2pp.
  • Winter 1979, Know Your Diamonds, More Books on Diamonds (Refers to “Gill’s Index”), by Betsy Barker, p. 247, 7pp.
  • Summer 1980, A Black Rose Cut Diamond, p. 321, 1p.
  • Winter 1980, Seldom Seen Absorption Spectra in Diamonds, p. 392, 1p.

Laser Treatment

  • Fall 1970, Lasering Diamonds, First Done, p. 224, 3pp.
  • Winter 1971, Improved Lasering Techniques for Diamonds, p. 370, 2pp.
  • Spring 1972, Laser Drilling Diamonds, p. 21, 2pp.
  • Summer 1972, Laser Drilling Diamonds, p. 56, 3pp.
  • Fall 1972, More on Laser Drilling Diamonds, p. 89, 3pp.
  • Winter 1972, A Deep Laser Hole, p. 114, 1p.
  • Spring 1973, Interesting Laser Drilling, p. 139, 2pp.
  • Spring 1973, Attitudes Toward Laser Drillings, p. 144, 2pp.
  • Winter 1973, Many Laser Holes in One Diamond, p. 230, 2pp.
  • Winter 1976, Seventeen Laser Drill Holes in One Diamond, p. 124, 1p.

Diamond Inclusions

  • Winter 1947, A Diamond in a Diamond, by Liddicoat, p. 492, 2pp.
  • Fall 1950, A Diamond in a Diamond the Slijper Diamond, p. 347, 2pp.
  • Spring 1952, Unusual White Cloudy Bands from Corner to Corner in Three Directions in an Octahedron Diamond Crystal (on Cover) (See also Summer 1966, p. 40, 2pp.)
  • Summer 1963, Diamond Inclusions, p. 51, 4pp.
  • Fall 1964, Needle-Like Inclusions in a Diamond, p. 218, 1p.
  • Spring 1965, Needle-Like Inclusions in Diamonds, p. 268, 2pp.
  • Spring 1965, Typical Cloud in Natural-Colored Brown Diamonds, p. 269, 2pp.
  • Winter 1965, Rare Moss-Like Inclusions in Diamond; and Other Inclusions, p. 364, 1p.
  • Fall 1966, Rare Moss-Like Inclusions in Diamond, p. 72, 2pp.
  • Spring 1967, Sugar-Cube-Like Inclusions in Diamond, p. 137, 2pp.
  • Spring 1967, Sugar-Cube-Like Inclusions in Diamond (from Sierra Leone), p. 146, 2pp.
  • Spring 1967, Rounded Crystal Inclusions and a Maltese Cross Inclusion, p. 154, 2pp.
  • Spring 1968, First Fingerprint Inclusions, First Needles (in Three Directions) Inclusions in Diamond, Seen at GIA, p. 278, 2pp.
  • Fall 1968, Sugar-Cube-Like Inclusions Under High Magnification, p. 344, 2pp.
  • Fall 1969, Color Banding in a Treated Yellow-Brown Diamond, p. 92, 2pp.
  • Spring 1970, Needle-Like Inclusions in Diamond (Almost a Star), p. 153, 1p.
  • Spring 1970, Milky White Diamond, p. 156, 2pp.
  • Spring 1971, Graining in Diamond, p. 286, 1p.
  • Spring 1971, Crazed Diamond Surface, p. 286, 1p.
  • Fall 1971, Graining in Diamonds. and Grading Problems, p. 344, 2pp.
  • Fall 1971, Tomahawk Shaped Knot on a Brilliant Diamond Table, p. 345, 2pp.
  • Fall 1971, Square Graining, and Clarity Grading Ranges, p. 360, 2pp.
  • Winter 1971, Rare Diamond Inclusions, p. 372, 2pp.
  • Winter 1971, Graining in Clarity of a Large Green Diamond, p. 385, 1p.
  • Spring 1972, Surface Graining Shows on Facet Polish, p. 11, 2pp.
  • Spring 1972, Grain and Growth Lines in Diamonds, p. 22, 2pp.
  • Fall 1973, An Interesting Cross Inclusion in a Diamond, p. 201, 2pp.
  • Fall 1974, A Moss-Like Inclusion in a Diamond, p. 331, 2pp. (See also Winter 1983, p. 233, 1p.)
  • Fall 1974, A Nail-Like Inclusion in Diamond, p. 340, 2pp.
  • Fall 1974, A Lifelike Bug Inclusion in Diamond, p. 342, 1p.
  • Fall 1974, Needles, and Octahedral Diamond Crystals Included in Diamonds, p. 347, 2pp.
  • Fall 1975, A Treated Green Diamond with a Maltese Cross, p. 76, 1p.
  • Fall 1975, A Sugar-Cube-Like Inclusion with Protruding Needle, p. 76, 2pp.
  • Winter 1976, A Two-Phase Inclusion, Liquid and Gas, in a Diamond, p. 114, 1p.
  • Summer 1976, Spherical Bubble-Like Inclusions in a Diamond, p. 183, 2pp.
  • Fall 1976, A Brown Diamond Shows Very Knotty Table, p. 213, 1p.
  • Fall 1976, Laser Holes and Damage to Diamonds, p. 218, 2pp.
  • Fall 1976, A Centipede-Like Inclusion in a Diamond, p. 219, 1p.
  • Winter 1976, Excessive Lasering, p. 233, 1p.
  • Summer 1977, Clarity Rules on Graining, p. 297, 3pp.
  • Summer 1977, A 6-Rayed Snowflake Inclusion, p. 307, 2pp.
  • Fall 1977, Analytical Results of Poly-Mineralic Sulfide Inclusions in Diamond, Gübelin, p. 322, 6pp.
  • Winter 1978, Worm-Like Inclusions in Diamond, p. 364, 1p.
  • Fall 1979, Interesting Diamond Inclusions and Characteristics, p. 196, 5pp
  • Fall 1979, Cubic Cloud and Octahedron Cloud, Natural Cube Rough, Green Graining, & Feather, p. 209, 5pp.
  • Fall 1979, Green Grain Line in High Color Diamond, p. 210, 1p.
  • Spring 1980, Sugar Cube and Crystal Inclusion, p. 265, 2pp.
  • Summer 1980, The Elusive Nature of Graining in Gem Quality Diamonds, by Robert E. Kane, p. 294, 21pp.
  • Winter 1980, Epigenetic Stains in Diamonds & Clouds in Diamonds, p. 397, 3pp.
  • Winter 1980, Phantom Crystal in a Diamond, p. 410, 2pp.

Diamond Grading and Cutting

  • Summer 1936, The New Line-Cut Diamond, p. 43, 2pp.
  • Winter 1936, The New Diamond Cuts Break Easier than Thicker Old Cuts, p. 68, 1p.
  • Winter 1936, Notes on Diamond Grading (Clarity and Color), p. 77, 2pp.
  • Summer 1937, Gauges for Diamond Proportions, p. 109, 3pp.
  • Fall 1937, New Diamond Grading Equipment (Microscopes), p. 114, 5pp.
  • Summer 1939, Increased Demand for Spready Diamonds, p. 24, 1p.
  • Fall 1940, Diamond Color Gauge, p. 105, 1p.
  • Spring 1942, Evaluating Diamond Make, p. 2, 5pp.
  • Spring 1943, Girdle-Faceted Diamonds, p. 71, 1p.
  • Winter 1944, More Patents on Modifications of the Brilliant Diamond, p. 184, 1p.
  • Spring 1945, New and Old Novelty Styles of Brilliant Cutting, by Shipley, p. 194, 7pp.
  • Fall 1945, Diamond Cutting By the Electric Arc Method, p. 263, 5pp.
  • Winter 1945, The Diamondscope, p. 285, 4pp.
  • Spring 1946, p. 313, 2pp.
  • Summer 1946, The Leveridge Gauge and Weight Estimation, p. 324, 2pp.
  • Summer 1947, The New Standard Diamondlite, p. 431, 1p.
  • Winter 1947, Estimating Weights of Recut Diamonds with the Leveridge Gauge, p. 486, 4pp.
  • Winter 1948, New Classification of Rough Diamonds by De Beers Co., p. 120, 2pp.
  • Spring 1950, Diamond Jewelry Through the Ages, p. 267, 11pp.
  • Winter 1953, Procedures for Cutting and Grading Diamond, by G. Kaplan, p. 355, 7pp.
  • Summer 1956, Modern Diamond Cutting Tools, p. 310, 10pp.
  • Spring 1958, Electronic Colorimeter for Diamonds, by Shipley, p. 136, 9pp.
  • Summer 1958, Clarity in Diamonds, p. 174, 7pp.
  • Spring 1959, A Large Rose Diamond, 13 1/2 mm x l l/2 mm, p. 266, 1p.
  • Fall 1959, Another Large Rose Diamond, 15mm x 2.1mm, p. 336, 1p.
  • Winter 1961, The New Princess Cut, p. 250, 1p.
  • Fall 1962, Rapid Sight Estimates of Diamond Cutting Quality, by Liddicoat, p. 323, 13pp.
  • Winter 1962, p. 365, 11pp.
  • Fall 1962, The 20th Century Cut, p. 340, 1p.
  • Winter 1963, Estimating Diamond Weight Before and After Recutting, p. 118, 3pp.
  • Winter 1965, A Diamond with 122 Facets, p. 360, 2pp., (See also Winter 1966, p. 112, 2pp.)
  • Spring 1967, Diamond Proportion Grading and the New Proportionscope (Pictured on Back Cover), p. 130, 7pp.
  • Spring 1968, The Optics of Brilliant Cut Diamonds, p. 263, 9pp.
  • Fall 1968, A Large Rose Cut Diamond Fraudulently Set in Closed-Back Setting to Imitate Larger Stone, p. 350, 2pp.
  • Fall 1969, Modern Rose Cut Diamonds, p. 90, 2pp.
  • Winter 1969, Polished or Unpolished Girdles (?), p. 120, 2pp.
  • Spring 1970, Polished or unpolished girdles, p. 161, 1p.
  • Fall 1970, Diamond Polished Nearly Parallel to Cleavage (Grain), p. 230, 2pp.
  • Fall 1971, A 20th Century Cut Diamond, p. 345, 1p.
  • Winter 1971, The Barion Cut, a New Standard Mixed Cut for Diamonds, p. 366, 4pp.
  • Winter 1971, Double Girdles to Eliminate Bearding, p. 372, 3pp.
  • Winter 1971, A Huge Pear-Shape Rose Cut Diamond (Foil Backing to Imitate Pavilion), p. 375, 2pp.
  • Spring 1974, The 144 Facet Diamond is 32% More Brilliant than the 58-Facet Diamond, p. 259, 12pp.
  • Spring 1974, (the GIA Rebuttal to Above), p. 271, 2pp.
  • Spring 1974, (the 144-Facet Diamond is Less Brilliant Than the 58-Facet Diamond), p. 273, 11pp.
  • Fall 1974, A Very Thin and Deep Laser Hole, p. 347, 2pp.
  • Summer 1975, Twinning Plane Causes Polishing Problems, p. 46, 1p.
  • Fall 1975, Faceting Limits (Diamonds and Colored Stones), p. 78, 10pp.
  • Winter 1976, The Various Effects of Faceted Gems, p. 98, 15pp.
  • Fall 1977, The New “Radiant-Cut”, p. 332, 2pp.

Diamond Trade

  • March-April 1934, Antwerp Cutters Optimistic, p. 48, 1p.
  • 1934, Diamonds at the 1933 Chicago World’s Fair, p. 23, 4pp.
  • March-April 1934, How to Buy Diamonds, p. 63, 2pp.
  • -Dec. 1934, Changes in the Marketing of Diamonds, by E. Oppenheimer, p. 159, 1p.
  • -Feb. 1935, Reminiscences of a S. African Diamond Buyer in 1921, p. 184, 4pp.
  • March-April 1935, p. 230, 2pp.
  • May-June 1935, p. 251, 3pp.
  • March-April 1935, Diamond buying as an Investment (False?), p. 232, 1p.
  • Fall 1936, The Diamond Market, p. 50, 1p.
  • Winter 1936, The Diamond Industry, by Ball, p. 67, 2pp.
  • Fall 1939, A Visit to the Diamond Market, p. 34, 3pp.
  • Summer 1940, Recent Developments in the Diamond Industry, by Ball, p. 85, 2pp.
  • Winter 1940, The Diamond Industry in 1940, by Ball, p. 114, 3pp.
  • Spring 1944, The Diamond Industry As Of April 29, 1944, by Ball, p. 126, 3pp.
  • Fall 1946, The Diamond Industry in 1945, by Ball, p. 346, 3pp.
  • Winter 1948, The Diamond Industry in 1947, by Ball, p. 111, 3pp.
  • Fall 1949, The Diamond Syndicates and Their Successors, by Shipley, p. 199, 8pp.
  • Fall 1949, New Wage Scale for U.S. Diamond Cutters, p. 219, 2pp.
  • Fall 1949, The Six Diamond Clubs in the World, p. 220, 1p.
  • Fall 1949, Origin and Use of the Diamond Engagement Ring, p. 223, 4pp.
  • Winter 1949, The Diamond Industry in 1948, p. 251, 4pp.
  • Fall 1950, The Diamond Industry in 1949, p. 341, 3pp.
  • Winter 1951, Heavy Media Separation Success, by Liddicoat, p. 116, 4pp.
  • Winter 1951, The Diamond Industry in 1950, by Foshag and Switzer, p. 129, 4pp.
  • Spring 1952, Diamond History and Mining Over the World, p. 154, 8pp.
  • Summer 1952, p. 188, 3pp.
  • Winter 1953, Alluvial Diamond Recovery, p. 365, 2pp.
  • Winter 1953, Alluvial Diamond Recovery by Electrostatic Separation, p. 374, 2pp.
  • Winter 1954, Currency Value Differences in the Diamond Trade, by Kaplan, p. 123, 2pp.
  • Summer 1955, Diamond Selling Practices, by Liddicoat, p. 165, 7pp.
  • Summer 1957, Text of Speech to American Gem Society on “Diamond Rulings,” by Liddicoat, p. 38, 5pp.
  • Winter 1959, De Beers Made Exclusive Agent for Russian Diamonds, p. 373, 1p.
  • Fall 1963, Diamond Mining and Recovery Today, p. 67, 15pp.
  • Fall 1966, Six Centuries of Diamond Design, by Tillander, p. 77, 18pp.
  • Summer 1971, Diamond Prices of a Century Ago, by Liddicoat, p. 325, 3pp. (See also Spring 1972, p. 29, 1p.)
  • Spring 1972, The Israeli Diamond Polishing Industry, p. 2, 6pp.
  • Summer 1980, A New View of Diamond’s Beauty – The ‘Cone of Brilliance’,’ by George R. Kaplan, p. 324, 2pp.

Emerald

  • Nov.-Dec. 1934, Emerald Mining in Colombia, p. 149, 6pp.
  • Spring 1938, South African Emeralds, p. 146, 1p.
  • Summer 1940, Differences Between Russian and Colombian Emeralds, by Gübelin, p. 89, 4pp.
  • Spring 1941, The Emerald Mines of Muzo, Colombia, p. 130, 5pp.
  • Winter 1943, “Indian Emeralds”–Crackled Quartz, Dyed, p. 118, 1p.
  • Summer 1945, A Cat’s-Eye Emerald, p. 222, 1p.
  • Fall 1947, The 2,226 Gram Emerald of Iakov I. Kakovin, p. 469, 2pp.
  • Winter 1947, The Emerald in Fable and History, p. 497, 3pp.
  • Spring 1948, Recent Emerald Production of Colombia, p. 25, 2pp.
  • Spring 1951, Data on Indian Emeralds, by Gübelin, p. 13, 10pp.
  • Summer 1950, Emerald Mine Report from Colombia, p. 316, 1p.
  • Summer 1950, Emeralds Mined in India, p. 321, 1p.
  • Fall 1950, Indian Emeralds, by Webster, p. 344, 2pp.
  • Winter 1950, Report of Chivor Emerald Mines, p. 376, 3pp.
  • Fall 1955, The new Gachala Emerald Mine in Colombia, p. 195, 2pp.
  • Summer 1956, The Emeralds from Habachtel, Austria, by Gübelin, p. 295, 15pp.
  • Fall 1958, The New Emeralds from Sandawana, Southern Rhodesia, by Gübelin, p. 195, 9pp.
  • Fall 1958, Sandawana Emeralds-Some Commercial Aspects, p. 221, 3pp.
  • Spring 1959, A Near Flawless and Beautiful Color Emerald 12.65 cts., p. 264, 2pp.
  • Spring 1959, Another Emerald Deposit Found in Rhodesia, p. 284, 1p.
  • Fall 1960, An Oxidation Layer Seen on Old Emeralds, p. 70, 1p.
  • Spring 1961, A New Emerald Find Near Borur, Colombia, p. 142, 2pp.
  • Winter 1961, Brazilian Pegmatite Emerald and its Absorption Spectrum, p. 244, 1p.
  • Winter 1961, New Data on New Deposit of Australian Emeralds, by Gübelin, p. 251, 1p.
  • Winter 1963, A New Source of Emeralds in Brazil, by Draper, p. 111, 5pp.
  • Fall 1964, Trapiche Emeralds from Colombia, p. 210, 5pp.
  • Winter 1964, Chromeless Emeralds from Brazil Identified as Emeralds by GIA, p. 244, 1p.
  • Spring 1965, Trapiche Emeralds from Colombia, p. 265, 3pp.
  • Summer 1967, Trapiche Emeralds from Colombia in Large Sizes, p. 181, 2pp.
  • Fall 1967, Black-Core Emerald Crystals, p. 799, 3pp.
  • Fall 1967, A New Emerald Source in Australia, p. 220, 4pp.
  • Spring 1968, The Black Material in Trapiche Emeralds, p. 287, 2pp.
  • Summer 1968, Inclusions in Russian and Colombian Emeralds, p. 305, 3pp.
  • Summer 1968, Trapiche Emeralds, p. 316, 2pp.
  • Summer 1968, Zambia Emeralds, p. 320, 1p.
  • Spring 1969, Notable Emeralds in the Crown Jewels of Iran, by Meen, p. 8, 3pp.
  • Spring 1969, Changes in Synthetic Emeralds, p. 23, 2pp.
  • Summer 1969, Russian Emeralds, p. 63, 2pp.
  • Summer 1969, First Fluorite Inclusion Seen in Emerald, p. 53, 2pp.
  • Summer 1970, Natural Etched Trapiche Crystal left on Girdle, p. 187, 2pp.
  • Summer 1970, A 7 ct. Faceted Trapiche Emerald, p. 195, 1p.
  • Fall 1970, 3-Phase Inclusions, with Two Bubbles, Found in Colombian Emeralds, p. 235, 2pp.
  • Winter 1970, North Carolina Emeralds, p. 251, 3pp.
  • Spring 1971, 2-phase Inclusions in Colombian Emeralds, p. 275, 1p.
  • Spring 1971, Trapiche Emeralds, Inclusions and High R.I., p. 277, 1p.
  • Winter 1971, New Type Inclusions in Natural Emeralds, p. 379, 2pp.
  • Spring 1972, A Heat-Wave Pattern Inclusion in Natural Emeralds, p. 18, 2pp.
  • Summer 1972, Unusual Quartz Inclusions in North Carolina Emeralds, p. 34, 4pp.
  • Summer 1972, New Emerald Find from Marua District, Mozambique, p. 52, 2pp.
  • Fall 1972, Muzo Emerald Mine, Colombia, p. 77, 5pp.
  • Fall 1972, A Plane of Pyrites in a Colombian Emerald, p. 93, 2pp.
  • Spring 1973, Parisite in Muzo Emeralds and Trapiche Emeralds, p. 148, 2pp.
  • Winter 1973, Heavy Concentration of Pyrites in a Colombian Emerald, p. 253, 2pp.
  • Spring 1975, A Helical Inclusion in Emerald, p. 28, 1p. (See also Fall 1983, p. 173, 1p.)
  • Fall 1975, Color Zoning in an Emerald, p. 73, 2pp.
  • Summer 1976, Included Rutile Needles in Emerald, p. 174, 1p.
  • Fall 1976, A Quartz Crystal Inclusion in Colombian Emerald, p. 213, 1p. (See also Summer 1977, p. 314, 1p.)
  • Fall 1977, Very Strong Color Zoning in Emerald, p. 328, 2pp.
  • Fall 1977, Colombian Emeralds, by Sinkankas, p. 334, 4pp.
  • Winter 1977, A Puzzling Natural Emerald and “Ferrer” Glass Imitation Emeralds from the 1920’s, p. 366, 1p.
  • Fall 1979, Tripache Emerald, p. 211, 1p.
  • Winter 1980, Unexpected Absorption Spectrum in Natural Emeralds, p. 391, 2pp.
  • Winter 1980, Mobile Bubble in A Three-Phase Emerald Inclusion, p. 392, 3pp.

Garnet

  • July-Aug. 1934, Unusual Garnets, p. 125, 2pp.
  • Summer 1945, Absorption Spectra of Pyrope Garnet, by Anderson, p. 232, 2pp.
  • Fall 1945, p. 257, 2pp. #3: Spring 1946, p. 301, 3pp.
  • Summer 1947, Distinction Between Garnet and Corundum, p. 435, 1p.
  • Fall 1947, The Garnet. Past and Present, p. 465, 3pp.
  • Spring 1948, Pyrandine, A New Name For An Old Garnet, by Anderson, p. 27, 1p.
  • Winter 1950, Garnet Produced from Madagascar, p. 378, 2pp.
  • Summer 1953, Demantoid, by Ehrmann, p. 317, 1p.
  • Summer 1954, Third Find of Rhodolite Garnet; Discovered in Greenland by John Sinkankas, p. 63, 1p.
  • Fall 1960, A 19.65 ct. Hessonite Garnet (showing absorption spectrum), p. 72, 1p.
  • Fall 1960, Cat’s-Eye Demantoid, p. 92, 1p.
  • Fall 1962, A Ruby Red 16 ct. Chrome Pyrope (Showing Absorption Spectrum), p. 339, 1p.
  • Spring 1963, Pink Grossularite Garnet, p. 23, 2pp.
  • Summer 1963, Massive Grossularite from S. Africa, by Webster, p. 35, 4pp.
  • Summer 1966, Hydrogrossularite Garnet from the Transvaal, p. 49, 9pp.
  • Fall 1966, p. 74, 4pp.
  • Winter 1966, A 17 ct. Faceted Uvarovite Garnet (Showing Absorption Spectrum), p. 113, 2pp.
  • Spring 1968, A Ruby Red 4.27 ct. Chrome Pyrope, p. 279, 1p.
  • Winter 1968, Transparent Green Grossularite, p. 375, 1p.
  • Spring 1969, Tanzanian Garnets, p. 15, 2pp.
  • Summer 1969, Emerald-Green Grossularite Garnet, p. 58, 1p.
  • Summer 1969, A 2-Phase Inclusion in Garnet (First Seen), p. 67, 2pp.
  • Winter 1969, A fine 6 ct. Demantoid Garnet Showing Horsetail Inclusions, p. 121, 2pp.
  • Spring 1970, New Transparent Green Grossularite Inclusions, p. 151, 2pp.
  • Spring 1970, Alexandrite-Like Garnet from Tanzania, p. 162, 1p.
  • Summer 1970, A Rare Alexandrite Garnet from Tanzania, p. 174, 4pp.
  • Summer 1970, Spessartite Garnet Inclusions, p. 189, 1p.
  • Summer 1970, Spessartite Absorption Spectrum, p. 197, 2pp.
  • Summer 1970, Grossularite Garnet Inclusions, p. 196, 2pp.
  • Fall 1970, Testing Demantoid with Ultra-Violet Light, p. 226, 2pp.
  • Fall 1970, New Transparent Colorless Grossularite from Tanzania, p. 227, 3pp.
  • Fall 1970, Alexandrite Garnet from Norway, p. 229, 1p.
  • Fall 1971, A Massive Hydrogrossular Garnet Cut in Cabochon (One end Pink, the Other End Green) (Showing Absorption Spectrum), p. 354, 3pp.
  • Summer 1972, Two Unusual Rhodolite Property Variations, p. 40, 1p.
  • Spring 1973, A Typical Demantoid Inclusion, p. 150, 1p.
  • Summer 1974, Green Grossularite Garnets, “Tsavorites” on the Kenya-Tanzania Border, p. 290, 6pp.
  • Summer 1974, Composition of “Tsavorites” from Kenya and Tanzania, by Switzer, p. 296, 2pp.
  • Fall 1974, Jewelry Repair Involving Garnet and Glass Doublets, Dangerous, p. 344, 2pp.
  • Fall 1974, Some Unusual Inclusions in Hessonite and Rhodolite, p. 349, 2pp.
  • Winter 1978, Blue to Red Colour Changing Garnet from East Africa, p. 122, 2pp.
  • Winter 1978, Demantoid Garnet from Korea; Alexandrite Garnet from East Africa, p. 123, 3pp.
  • Summer 1979, Colorless and Green Grossularite from Tanzania, by Pieter Muije, p. 162, 12pp.
  • Fall 1979, Unusual Gem Garnets of East Africa, p. 218, 2pp.

Jade

  • March-April 1934, Jadeite Thought Found in America (Oregon), p. 54, 1p.
  • May-June 1934, Jade, p. 80, 3pp.
  • May-June 1934, Red Jade, by M. Ehrmann, p. 84, 1p.
  • Fall 1944, Nephrite Found in Lander, Wyo., in 1936, p. 170, 1p.
  • Fall 1948, Jade Carving in China, p. 82, 5pp.
  • Spring 1950, Jadeite and Nephrite Found in Calif., p. 289, 1p.
  • Summer 1951, Jadeite and Nephrite Found in Calif., and artifacts, p. 76, 3pp.
  • Spring 1952, Jade in Mexico, p. 147, 5pp.
  • Summer 1954, The Nature of Jade, p. 38, 9pp.
  • Fall 1954, p. 67, 11pp.
  • Fall 1956, Jadeite from San Benito County, Calif., p. 331, 4pp.
  • Fall 1960, Jade Cutting Today, p. 81, 9pp.
  • Winter 1964, “Pigeon Eye” Nephrite from Wyoming (Shows Chatoyant Spots), p. 251, 2pp.
  • Summer 1966, Taiwan Jade (Nephrite), p. 62, 1p.
  • Spring 1976, Jade, China’s Contribution to Fine Art, by A. Alexander, p. 145, 8pp.
  • Fall 1979, Clarification of Composition of Maw Sit Sit, p. 217, 2p.
  • Summer 1980, Australia Likely To Be Major Supplier of Jade, by J. Stone, p. 331, 1p.

Jade – Gemology

  • Summer 1943, So-Called “Mexican Jade” is Calcite, p. 87, 1p.
  • Winter 1955, Cat’s-Eye Nephrite, p. 238, 1p.
  • Spring 1958, Jadeite Triplets, p. 134, 3pp.
  • Winter 1961, Jadeite “Yunnan Jade” from Burma (Showing Absorption Spectrum), p. 242, 2pp.
  • Spring 1962, Rare Gray-Blue Jadeite, p. 283, 1p.
  • Winter 1963, Faded Dyed Jadeite, p. 100, 2pp.
  • Summer 1964, Stable Color in Dyed Jadeite, p. 181, 1p.
  • Winter 1965, Dyed Nephrite First Seen at the GIA, p. 363, 2pp.
  • Winter 1965, A New Type of Jadeite Triplet (Two Pieces of Jadeite, Green Coloring in Center), p. 369, 2pp.
  • Winter 1967, Dyed Jadeite, p. 245, 1p.
  • Summer 1969, Glass Jade Imitation, p. 58, 2pp.
  • Winter 1970, Glass-Like Jade Imitation, p. 249, 3pp.
  • Summer 1971, Dyed Lavender Jadeite, p. 323, 2pp.
  • Summer 1972, Jade Substitute (Glass), p. 44, 2pp.
  • Summer 1972, Jade-Like Minerals, p. 50, 3pp.
  • Fall 1972, Distinguishing Burial Jade from Burned Jade Not Yet Possible, p. 83, 2pp.
  • Fall 1972, Paraffin-Treated Jade, p. 84, 2pp.
  • Fall 1972, Blue Jade-Like Material (Tremolite), p. 91, 2pp.
  • Fall 1972, A Cat’s-Eye Yellow Jadeite, p. 93, 1p.
  • Winter 1972, Testing Dyed Antique Replicas of Jade, p. 112, 1p.
  • Winter 1972, Jade Cat’s-Eye (?), p. 113, 1p.
  • Spring 1973, Jade Imitations in Devitrified Fibrous Glass (Meta Jade, Imori Stone), p. 134, 2pp.
  • Summer 1973, Durability of Jadeite vs. Nephrite, p. 175, 2pp.
  • Fall 1973, Treated Lavender Jadeite, p. 214, 2pp.
  • Fall 1974, Unevenly Dyed Jadeite, p. 350, 1p.
  • Spring 1975, A “Meta Jade” Glass with Spectrum of Natural Jadeite, p. 27, 2pp.
  • Fall 1975 Rare, Nearly Transparent, Light Gray Faceted Jadeite, p. 73, 2pp.

Lapis Lazuli

  • Spring 1936, The Specific Gravity of Lapis Lazuli, p. 8, 1p.
  • Summer 1941, Colorado Lapis Lazuli, p. 154, 3pp.
  • Fall 1954, A New Substitute for Lapis Lazuli, by Anderson, p. 88, 2pp.
  • Summer 1962, A Lapis Lazuli Test, p. 315, 1p.
  • Spring 1963, Translucent Lapis Lazuli (Showing Absorption Spectrum), p. 20, 1p.
  • Summer 1963, Testing Stained Lapis Lazuli, p. 44, 1p.
  • Fall 1965, Notes on Lapis Lazuli and its Treatment, p. 337, 2pp.
  • Summer 1967, Dyed Lapis Lazuli, p. 180, 2pp.
  • Spring 1968, Dyed Waxed Lapis Lazuli, p. 278, 1p.
  • Summer 1970, A Beautiful Pietre Dure (Italian Inlay) Lapis Lazuli, p. 188, 1p.
  • Fall 1974, Imitation Lapis Lazuli, p. 327, 4pp.
  • Fall 1976, Non-Single-Crystal Synthetics (Synthetic Gilson Lapis Lazuli), by Nassau, p. 194, 5pp.

Opal

  • Winter 1937, The Australian Black Opal, p. 137, 2pp.
  • Winter 1938, Opal (with Glossary of Varieties), by Briggs, p. 201, 2pp.
  • Spring 1939, p. 11, 1p.
  • Winter 1946, New Australian Opal Fields, p. 364, 3pp.
  • Fall 1947, Mexican Treated Black Opal, p. 475, 2pp.
  • Fall 1950, Opal Industry of Australia, Past and Present, p. 334, 8pp.
  • Winter 1950, British Collector Now Owns the Pandora Opal, p. 381, 1p.
  • Spring 1953, Mexican Opal, by Foshag, p. 278, 5pp.
  • Fall 1959, Opal of Australia, p. 323, 11pp.
  • Winter 1959, p. 362, 9pp.
  • Winter 1965, The Black Opals of Lightning Ridge, p. 355, 4pp.
  • Spring 1966, p. 14, 7pp.
  • Fall 1971, The Story of the White Cliffs Opal Field, Australia, p. 334, 10pp.
  • Fall 1971, A Carved 288.25 ct. Mexican opal, p. 357, 2pp.
  • Fall 1972, Opal with Play-of-Colors Found in Arizona, p. 91, 1p.
  • Fall 1976, Opalescent Sandstone from Louisiana, p. 201, 1p.
  • Fall 1979, COOBER PEDY – The Opal Town, by J. Stone, p. 213, 4pp.
  • Spring 1980, GEMLURE, Opal: Smolder of Fortune?, by Cheri Lesh, p. 283, 6pp.

Opal Gemology

  • Nov-Dec. 1935, New Type of Opal Doublet, p. 344, 1p.
  • Fall 1948, Variation in Opal Properties Per Locality, p. 90, 2pp.
  • Winter 1953, Cause of Color in Opal, by Leechman, p. 361, 4pp.
  • Spring 1954, The Structure and Optical Behavior of Iridescent Opal, p. 21, 6pp.
  • Spring 1955, Lattice Structure in Precious Opal, by Leechman, p. 154, 2pp.
  • Fall 1959, Treated Black Opal, p. 343, 1p.
  • Fall 1962, Treated Black Opal, p. 336, 3pp. (See also Winter 1962, p. 380, 1p.)
  • Spring 1964, Treated Black Opal, by Gübelin, p. 157, 3pp.
  • Fall 1964, Opal Triplet; Black Onyx Backed, Quartz Topped, p. 221, 2pp.
  • Winter 1964, Treated Black Opal and its Patchy Iridescence, p. 242, 2pp.
  • Summer 1965, The Origin of Color in Opal, p. 291, 8pp.
  • Summer 1966, A Cat’s-Eye Opal, p. 60, 2pp.
  • Spring 1967, Oolitic opal, p. 149, 2pp.
  • Summer 1967, An Opal that Loses its Color When Water Soaked, p. 179, 2pp.
  • Fall 1967, Formation of Precious Opal, p. 194, 5pp.
  • Fall 1967, Oolitic Opal, p. 199, 1p.
  • Fall 1967, Opal Substitutes (Crushed Opal in Resin), p. 219, 3pp.
  • Spring 1968, Opal and Rock Crystal Doublets, p. 282, 2pp.
  • Fall 1968, Rare Cat’s-Eye Opals, p. 342, 2pp.
  • Winter 1968, Odd Leaf-Like Inclusion in an Opal, p. 380, 2pp.
  • Spring 1969, Opal Imitation, p. 21, 1p.
  • Spring 1969, Some Unusual Opal Inclusions, p. 26, 3pp.
  • Summer 1969, Chrysocolla Opal (First Seen), p. 67, 2pp.
  • Fall 1969, Smoke-Treated Opal, p. 91, 2pp.
  • Fall 1969, Some Unusual Opals, p. 97, 2pp.
  • Winter 1969, Artificially colored opals, p. 117, 1p.
  • Winter 1969, An Unusual Sugar-and-Acid-Treated Opal, p. 127, 1p.
  • Spring 1970, A Porous White Opal Impregnated with Black Plastic, p. 148, 1p.
  • Fall 1970, A Very Porous White Opal, p. 231, 2pp.
  • Winter 1970, Stained Black Opal, p. 249, 3pp.
  • Spring 1971, Nomenclature of Black Opal, p. 284, 2pp.
  • Summer 1971, A New Opal, Treated Black, with Very Low Properties, p. 317, 2pp.
  • Summer 1971, A very Unusual Opal, p. 321, 2pp.
  • Fall 1971, Black-Dyed Oolitic Opal, p. 351, 2pp.
  • Winter 1971, Natural Black Oolitic Opal, p. 382, 1p.
  • Spring 1972, New Synthetic Opal From Gilson, p. 18, 1p.
  • Spring 1972, Sugar-TreateBlack Opal, p. 21, 1p.
  • Spring 1972, Easily Testing a Mounted Opal Doublet, p. 24, 3pp.
  • Summer 1972, Transparency in Black Opals, p. 40, 2pp.
  • Summer 1972, An Opal Cabochon in which the Chipped Back was Epoxy Filled, p. 43, 2pp.
  • Fall 1972, High Transparency in Some Black Opals, p. 88, 2pp.
  • Winter 1972, Sugar-Treated Black Opal, Demonstration, p. 117, 1p.
  • Summer 1973, Gilson Synthetic Opal, p. 175, 3pp.
  • Winter 1973, A New Opal Doublet to Look Like Boulder Opal, p. 233, 1p.
  • Summer 1974, Treating Matrix Opal, p. 306, 3pp.
  • Summer 1974, Synthetic Opal, p. 309, 3pp.
  • Fall 1974, Imitation Opal on Matrix, p. 331, 2pp.
  • Fall 1974, Gilson Synthetic Opal (Black), p. 343, 1p.
  • Winter 1974, An Excellent Opal Imitation, p. 362, 3pp.
  • Winter 1974, A Black Opal Doublet, with Uneven Joint, p. 364, 2pp.
  • Spring 1975, A Strange, Dried-Up Opal, p. 26, 1p.
  • Summer 1976, Crystal Inclusions in Mexican Opal, p. 174, 1p.
  • Summer 1976, The Slocum Imitation Opal Put on the Market, p. 185, 2pp.
  • Fall 1976, Non-Single-Crystal Synthetic (Synthetic Gilson Opal), by Nassau, p. 194, 5pp.
  • Fall 1976, A Ball-Like Inclusion and Curved Striae in a Botryoidal Opal, p. 213, 2pp.
  • Winter 1976, Opal Doublet to Imitate Boulder Opal, p. 115, 2pp.
  • Winter 1976, Gilson Synthetic Opal, p. 126, 1p.
  • Winter 1977, Gilson Black Opal Triplet, p. 236, 1p.
  • Winter 1977, Observations on the Slocum Stone, p. 252, 5pp. (See also Summer 1977, p. 301, 1p. and p. 308, 1p.)
  • Summer 1978, Plastic Impregnated Gem Opal, by D. Vincent Manson, p. 49, 9p.
  • Fall 1979, Plastic Impregnated Opal and Plastic Opal, p. 219, 1p.

Paste

  • Fall 1949, Goldstone or Aventurine Glass, by Webster, p. 207, 3pp.
  • Summer 1957, Glass as a Diamond Substitute, p. 62, 1p.
  • Summer 1959, A Yellow-Green Faceted Glass with a Refractive Index Above 1.80, p. 292, 1p.
  • Winter 1961, Purpurine Glass in Faberge (Showing Absorption Spectrum), p. 244, 2pp.
  • Fall 1962, Cat’s-Eye Glass, p. 338, 1p.
  • Summer 1965, Alexandrite Colors in Glass, p. 315, 2pp.
  • Summer 1968, Identifying Glass vs. Textite, p. 314, 2pp.
  • Spring 1971, An Unusual Crystal Type Glass with Dendritic Inclusions, p. 279, 2pp.
  • Summer 1971, Lacy Stringers of Bubbles in Glass, p. 318, 1p.
  • Summer 1971, Crystalites in Glass, p. 323, 2pp.
  • Spring 1972, Crystalites in Glass, p. 23, 1p.
  • Fall 1972, Aventurine Glass with Specular Hematite Inclusions, p. 87, 2pp.
  • Winter 1972, Fine Cat’s-Eye Glass with Milk and Honey Effect, p. 108, 1p.
  • Spring 1973, Jade imitation in Devitrified Fibrous Glass, “Meta Jade” or “Imori Stone,” p. 134, 2pp.
  • Spring 1973, “Meta Jade” is Devitrified Fibrous Glass, p. 146, 1p.
  • Summer 1973, “Meta Jade” is Devitrified Fibrous Glass (warm to touch), p. 177, 2pp.
  • Fall 1973, Alexandrite-Like Glass, p. 203, 2pp.
  • Fall 1974, Crystal Groups in Sheaves in Glass, p. 346, 2pp.
  • Summer 1975, The “Mood Stone”–Quartz Top and Epoxy Back in Closed Setting, p. 59, 3pp.
  • Summer 1975, Black “Meta Jade” or “Imori Stone,” p. 61, 2pp.
  • Spring 1976, Opal-Like Glass, p. 155, 1p.

Pearls

  • Summer 1936, Cultured Pearls, p. 27, 3pp.
  • Spring 1938, The Bombay Pearl Market, p. 159, 2pp.
  • Fall 1938, Abalones and Their Pearls, p. 187, 2pp.
  • Spring 1942, Natural Pearls, p. 9, 4pp.
  • Summer 1942, p. 25, 4pp.
  • Summer 1943, The Pearls of Lower California and Mexico, p. 93, 2pp.
  • Summer 1947, The Present Status of the Japanese Cultured Pearl Industry, p. 417, 4pp. (See also Winter 1947, p. 495, 1p.)
  • Winter 1947, “Cave Pearls” or Pisolites, p. 503, 1p.
  • Summer 1948, Pearl Fishing in the Persian Gulf, by Alexander, p. 38, 4pp.
  • Spring 1949, Kokichi Mikimoto, Cultured Pearl Czar, by Foshag, p. 162, 1p.
  • Winter 1950, Australian Pearl Divers, p. 379, 1p.
  • Fall 1952, 1000-Year-Old Pearl Found in Yucatan Excavations, p. 227, 1p.
  • Fall 1960, A 48.12 Grain Pearl Found in Illinois in 1960, p. 67, 1p.
  • Winter 1961, Mr. S. Uda (Originator of Biwa Pearls) Speaks, p. 249, 2pp.
  • Spring 1962, Freshwater Cultured Pearls, by Crowningshield, p. 259, 15pp.
  • Fall 1963, Tridacna Pearls (Giant Clams) Show Flame Pattern on Surface, p. 89, 2pp.
  • Winter 1963, Red Abalone Pearls, p. 102, 1p.
  • Summer 1964, The Pink Pearls of Pakistan, p. 175, 6pp.
  • Fall 1965, A Pair of 16mm Abalone Pearls (Green and Red), p. 333, 1p.
  • Summer 1967, Cultured Pearl Farming and Marketing, p. 162, 11pp.
  • Fall 1980, Gemlure: Born in the Depths: The Perfect Pearl, by Cheri Lesh, p. 356, 9pp.

Pearl Gemology

  • March-April 1934, The Scientist’s View of Cultured Pearls, p. 43, 2pp.
  • July-Aug. 1934, Cultured Pearls said Not Genuine, p. 110, 3pp.
  • -Oct. 1934, Pearl Tests, by Shipley, p. 136, 1p.
  • Spring 1941, Pearl Colors, by Juergens, p. 139, 2pp.
  • Fall 1941, Natural and Cultured Pearls (Their Differences), by Alexander, p. 169, 4pp.
  • Winter 1941, p. 184, 5pp.
  • Winter 1946, Radiographic Examination of Pearls, p. 359, 5pp.
  • Winter 1946, New Pearl Essence Factories in Maine, p. 377, 1p.
  • Spring 1947, Pearl Identification by X-ray Diffraction, p. 387, 5pp.
  • Summer 1947, p. 428, 8pp.
  • Fall 1947, p. 471, 4pp.
  • Winter 1947, p. 508, 5pp.
  • Fall 1947, The GIA Pearlscope, by Shipley, p. 462, 3pp.
  • Spring 1950, Notes on Pearl Imitations, p. 288, 1p.
  • Fall 1950, Reverse Pattern on Half-Drilled Black Pearls, p. 353, 1p.
  • Fall 1950, Artificial Pearls Made By New Process, p. 353, 1p.
  • Winter 1951, Gem Trade Lab Gets New Pearl X-ray Machine, by Benson, p. 107, 6pp.
  • Winter 1951, Testing Drilled Pearls With Ultraviolet Light, p. 367, 1p.
  • Winter 1954, Weight Estimation of Pearls (Chart and Formula), p. 99, 8pp. (See also Spring 1955, p. 157, 1p.)
  • Winter 1954, Kokichi Mikimoto Dies (His History in the Pearl Industry), p. 108, 15pp.
  • Fall 1955, Electron Microscope Sees Aragonite Crystals in Cultured Pearls, p. 215, 4pp. (See also Winter 1955, p. 254, 1p.)
  • Spring 1958, Imitation Pearls, by Webster, p. 144, 4pp.
  • Summer 1959, Clam pearls, p. 293, 1p.
  • Fall 1959, Coque de Perle (Center of Nautilus), p. 342, 2pp.
  • Winter 1959, A Natural Pearl with Black Spot in a Circle, p. 357, 1p.
  • Spring 1960, A 17 x 14mm Dyed Black Cultured Pearl, p. 10, 1p.
  • Summer 1960, Testing Black Pearls (Natural and Dyed), by Benson, p. 53, 6pp.
  • Fall 1960, More on Testing Black Pearls (Natural and Dyed), by Benson, p. 75, 6pp.
  • Winter 1960, Testing Rose Pearls (Natural and Dyed), p. 114, 1p.
  • Spring 1961, An 11.8mm Pearl, Violet-Rose by Night, and Green by Day, p. 144, 1p.
  • Fall 1961, Mabe Pearls, p. 216, 4pp.
  • Fall 1961, A Huge Abalone Pearl, p. 220, 2pp.
  • Fall 1961, Reaction of Pearls to Vinegar, Colognes, etc., p. 222, 2pp.
  • Winter 1961, Spectrum Recognition of Natural (and Dyed) Black Pearls, p. 252, 4pp.
  • Summer 1963, Coque de Perle (Center of Nautilus) earrings, p. 40, 1p.
  • Fall 1963, Testing Black Pearls, p. 88, 1p.
  • Winter 1963, Bleached and dyed cultured pearls, p. 99, 2pp.
  • Winter 1963, Red Abalone Pearls, p. 102, 1p.
  • Winter 1964, Cutting a Pearl in Half to Make a Pair, p. 247, 2pp.
  • Spring 1965, Mallorca and Imitation Pearls, by Pough, p. 273, 8pp.
  • Spring 1965, Surface Conditions on Conch Pearls, p. 281, 2pp.
  • Spring 1966, A Pearl, Half Black and Half White, p. 24, 2pp.
  • Spring 1967, Irradiated Cultured Pearls, p. 153, 2pp.
  • Winter 1967, Hammered Effect on Pearl Surfaces, p. 251, 2pp.
  • Fall 1969, Tissue-Graft Pearls, p. 91, 2pp.
  • Spring 1970, Flame Like Pattern on Conch Pearls, p. 151, 2pp.
  • Spring 1970, Black Cultured Pearls, p. 156, 2pp.
  • Fall 1970, Gaps in Cultured Pearl Nacreous Layers, p. 230, 3pp.
  • Summer 1971, Structure of Clam Pearls, p. 315, 2pp.
  • Spring 1972, Cultured Pearl Ring Found, Outer Layer Worn, p. 21, 1p.
  • Summer 1972, A Blue Mabe Pearl (Inside Filled with Blue Pitch-Like Substance), p. 41, 1p.
  • Summer 1973, Canned Oysters with Cultured Pearls, p. 188, 2pp.
  • Winter 1973, An Egg-Shaped Clear Yellow Conch Pearl, p. 235, 1p.
  • Spring 1975, Pink Conch Pearls in a Necklace, p. 14, 1p.
  • Fall 1977, Untreated Black Cultured Pearls, p. 348, 1p. (See also *Winter 1978, p. 365, 1p.)
  • Winter 1977, Black Cultured Pearls, Natural Color, p. 365, 1p.
  • Spring 1978, Differentiation of Black Pearls, by Hiroshi Komatsu and Shigeru Akamatsu, p. 7, 9pp.
  • Spring 1979, Biwa Pearls, Black Pearls and Imitation Pearls, p. 147, 3pp.

Peridot

  • Summer 1938, Hawaiian Peridot, p. 162, 1p.
  • Spring 1960, A four-rayed star peridot, p. 3, 1p.
  • Winter 1962, Unusual inclusions in peridot, p. 376, 2pp.
  • Summer 1968, Peridot found in North Carolina, p. 311, 2pp.
  • Winter 1969, Cat’s-eye peridot, p. 129, 1p.
  • Spring 1970, Star peridot (4-rayed and 6-rayed), p. 150, 1p.
  • Spring 1975, Heat and chemical sensitivity of peridot, p. 14, 2pp.
  • Summer 1980, Diopside inclusions in Peridot, p. 332, 2pp.

Quartz

  • Winter 1939, Quartz, by Braggs, p. 58, 1p.
  • Spring 1940, p. 79, 2pp.
  • Summer 1940, p. 87, 2pp.
  • Fall 1949, Aventurine Quartz, by Webster, p. 208, 4pp.
  • Winter 1949, Amethyst color induced in rock crystal via cyclotron, p. 255, 1p.
  • Fall 1950, Quartz from Montezuma, Brazil, turns green upon heating, p. 346, 1p.
  • Winter 1950, Synthesis of Quartz Crystals, p. 359, 3pp.
  • Spring 1952, The Synthesis of Quartz, p. 151, 3pp.
  • Winter 1954, X-ray study of fibrous chalcedony (iridescent agate), p. 106, 3pp.
  • Fall 1957, “Green” Amethyst From Four Peaks, Arizona, by Sinkankas, p. 88, 8pp.
  • Summer 1960, A citrine triplet, p. 62, 1p.
  • Spring 1961, Worm-like inclusions, that grow, in chalcedony, p. 151, 1p.
  • Summer 1962, Quartz triplets (showing absorption spectrum), p. 307, 2pp.
  • Summer 1963, Quartz cat’s-eyes, p. 43, 1p.
  • Winter 1963, A very rare star amethyst, p. 101, 2pp.
  • Summer 1964, Reported excellent chrysoprase of Australia proves to be dyed chalcedony, p. 180, 1p.
  • Fall 1964, Reported excellent chrysoprase of Australia proves to be dyed chalcedony-nomenclature, p. 216, 1p.
  • Fall 1965, Marlborough Creek Chrysoprase of Australia, p. 323, 9pp.
  • Winter 1966, Dyed moss in agate, p. 118, 2pp.
  • Summer 1968, A 6-rayed star quartz cabochon with cat’s-eye on one side, p. 313, 2pp.
  • Summer 1968, Aventurine quartz inclusion, p. 315, 1p.
  • Fall 1968, Spherulitic inclusions in chalcedony, p. 344, 2pp.
  • Winter 1969, “Chrome chrysoprase”-jadeite-like, p. 121, 2pp.
  • Winter 1969, Synthetic smoky quartz, blue quartz, and green quartz from Russia, p. 129, 3pp.
  • Spring 1970, Chrome aventurine quartz (showing absorption spectrum), p. 158, 1p.
  • Summer 1970, White star quartz, p. 194, 2pp.
  • Summer 1971, Inclusions in amethyst that look like space capsules, p. 322, 2pp.
  • Fall 1971, Dyed chalcedony-excellent jade imitation (showing absorption spectrum), p. 350, 1p.
  • Spring 1972, Synthetic quartz from Ohio, p. 8, 2pp.
  • Summer 1972, A 20-inch high carved rock crystal vase, p. 43, 1p.
  • Fall 1972, An odd 6-rayed star quartz, p. 89, 2pp.
  • Spring 1973, Moveable bubbles in quartz crystals, p. 150, 2pp.
  • Summer 1973, Fire agate, p. 177, 1p.
  • Summer 1973, Petrified palm root, p. 182, 2pp.
  • Fall 1973, Fade test on Gamma-irradiated quartz, p. 212, 2pp.
  • Winter 1973, A rock crystal brilliant with tourmaline needle crystal running from culet to center of table, creates many reflections, p. 235, 2pp.
  • Winter 1973, Greenish-yellow citrine, gamma-irradiated (test available), p. 236, 2pp.
  • Spring 1976, Jade-like quartz, p. 155, 2pp.
  • Winter 1977, Imitation bloodstone, p. 234, 1p.
  • Winter 1977, Star Quartz and Banded Synthetic Quartz, p. 310, 3pp.
  • Winter 1977, Another Multi-Star Quartz, p. 364, 2pp.
  • Winter 1977, Synthetic Amethyst from Russia, p. 365, 2pp.
  • Spring 1978, Inclusions in Agate and Their Origins and Significance, By Roger K. Pabian, p. 16, 12pp.
  • Winter 1978, Star Quartz, p. 364, 2pp.
  • Winter 1978, Synthetic Amethyst, p. 365, 2pp.
  • Spring 1979, Fire Agates of Deer Creek, Arizona, by James L. Sweaney, p. 130, 13pp.
  • Spring 1979, Synthetic Amethyst, currently no test for a flawless amethyst, p. 151, 3pp.
  • Summer 1979, Quartz: Myth and Magic, Science and Sales, by Cheri Lesh, p. 174, 5pp.
  • Summer 1980, Citrine-Amethyst Quartz – A Gemologically New Material, by John I. Koivula, p. 290, 4pp.
  • Winter 1980, More News On Citrine-Amethyst Quartz, by John I. Koivula, p. 409, 1p.

Ruby

  • March-April 1935, Dichroic Colors in Ruby, p. 222, 1p.
  • Spring 1936, The Ruby Mines of Burma, p. 3, 4pp.
  • Summer 1936, p. 31, 4pp.
  • Spring 1940, Differences Between Burmese and Siamese Rubies, by Gübelin, p. 69, 4pp.
  • Winter 1940, Characteristics of Rubies from Ceylon, by Gübelin, p. 121, 4pp.
  • Fall 1956, The Ruby Mines of Mogok, Burma, p. 335, 8pp.
  • Summer 1962, Rubies from Kenya (new deposit), p. 316, 2pp.
  • Winter 1962, Repeated Twinning Lines in Both Synthetic and Natural Rubies, p. 378, 2pp.
  • Winter 1962, Wax-Treated Rubies, p. 382, 1p.
  • Summer 1963, A Star Ruby with a Bull’s-Eye Effect, p. 40, 2pp.
  • Winter 1965, The Rosser Reeves Ruby, 138.7 cts., Largest Gem Star Ruby Recorded, p. 367, 1p.
  • Spring 1967, Very Unusual Absorption Spectrum Seen in Tanzanian ruby, p. 138, 2pp.
  • Summer 1968, A Natural Ruby with Unusual Character, p. 311, 2pp.
  • Spring 1969, Notable Rubies in the Crown Jewels of Iran, by Meen, p. 10, 2pp.
  • Spring 1971, A 1795 ct. Mysore-Type Cabochon Ruby, p. 278, 2pp.
  • Summer 1971, The Lovely Roiled Structure of Fine Burmese Rubies, p. 318, 2pp.
  • Summer 1972, A Ruby with Epoxy Filling in Chipped Area, p. 38, 2pp.
  • Winter 1973, Unusual 12-Rayed Star Ruby with Two Meeting Points, p. 254, 1p.
  • Summer 1974, A Very Rare Liquid and Gas Inclusion in a Natural Ruby, p. 313, 2pp.
  • Fall 1974, A First Look at Rubies from Kenya, p. 334, 3pp.
  • Spring 1975, A Rock Showing a Mixture of Ruby and Green Tourmaline, p. 27, 1p.
  • Spring 1975, A Carved Rock of Chrome Green Zoisite and Ruby, p. 28, 1p.
  • Summer 1976, Unusual Liquid and Gas Inclusions in Ruby, p. 170, 2pp.
  • Fall 1979, Australia Adds Rubies To Its Mineral Riches, by Rex Scarbary, p. 220, 3pp.

Synthetic Ruby

  • Spring 1937, Unusual Inclusions in Synthetic Ruby, p. 91, 2pp.
  • Summer 1949, Reconstructed Rubies in Rod and Faceted Form, by Alexander, p. 184, 2pp.
  • Summer 1949, Reconstructed Rubies, by Gübelin, p. 186, 3pp.
  • Summer 1949, Reconstructed Rubies, by Anderson, p. 187, 2pp.
  • Spring 1951, Reconstructed Rubies Seen in New York Lab, p. 29, 1p.
  • Spring 1952, Many Reconstructed Rubies Found to be Synthetic Corundum, by L. Benson, p. 139, 7pp.
  • Winter 1952, Second Largest Synthetic Star Linde Ruby, 82.93 cts. (Largest Know, 109.25 cts.), p. 259, 1p.
  • Winter 1960, Ruby With Synthetic Overgrowth, Gübelin, p. 105, 9pp.
  • Summer 1961, Crackled Synthetic Ruby, p. 181, 1p.
  • Winter 1962, Repeated Twinning Lines in Both Synthetic and Natural Ruby, p. 378, 2pp.
  • Fall 1964, Crackled Synthetic Ruby, p. 215, 2pp.
  • Winter 1964, Parting Lines in Synthetic Ruby, p. 251, 1p.
  • Spring 1965, Flux-Fusion Synthetic Ruby, p. 270, 3pp.
  • Fall 1965, Synthetic Star Ruby from Between 1947-1952, p. 331, 2pp.
  • Winter 1965, Solution-Grown Synthetic Rubies, p. 361, 2pp.
  • Spring 1966, Solution-Grown Synthetic Rubies, p. 20, 2pp.
  • Spring 1966, Flux-Fusion Synthetic Rubies, p. 24, 2pp.
  • Fall 1966, Solution-Grown Synthetic Rubies, p. 68, 4pp.
  • Winter 1966, Chatham Synthetic Rubies, p. 110, 3pp.
  • Winter 1966, Flux-Grown Synthetic Rubies, p. 121, 2pp.
  • Spring 1967, Flux-Grown Synthetic Rubies, p. 141, 3pp.
  • Summer 1967, Flux-Fusion Rubies, p. 188, 2pp.
  • Fall 1967, Flux-Fusion Rubies, p. 205, 2pp.
  • Spring 1969, Kashan Flux Grown Rubies, p. 30, 5pp.
  • Winter 1969, Flux-Grown Synthetic Rubies, p. 112, 6pp.
  • Fall 1970, Hexagonal Platelets in Chatham Flux-Melt Rubies, p. 234, 2pp.
  • Spring 1971, Synthetic Rubies Treated to Look Natural, p. 275, 2pp.
  • Summer 1971, A New Kashan Ruby (a Crystal Aggregate), p. 316, 2pp.
  • Summer 1971, An Unusual Flux-Fusion Synthetic Ruby, p. 320, 2pp.
  • Winter 1971, Crackled Synthetic Ruby; Bubbles in Synthetic Ruby, p. 377, 1p.
  • Summer 1972, A New Flux Synthetic Ruby (Uses Verneuil Ruby Seed), p. 55, 1p.
  • Winter 1972, A Perfectly Good Fingerprint Inclusion in a Verneuil Synthetic Ruby, p. 115, 1p.
  • Spring 1973, Interesting Verneuil Synthetic Ruby Inclusion, p. 146, 2pp.
  • Summer 1973, Crackled Synthetic Ruby, p. 186, 2pp.
  • Spring 1975, Quench-Crackled Synthetic Rubies, p. 16, 3pp.
  • Spring 1975, Flux-Grown Synthetic Rubies (Beware), p. 17, 2pp.
  • Fall 1975, Flux-Grown and Flame-Fusion Synthetic Rubies, p. 89, 2pp.
  • Winter 1976, Flux-Grown Synthetic Rubies, p. 126, 2pp.
  • Summer 1976, A Flux Synthetic Ruby on a Flame-Fusion Synthetic Seed, p. 174, 2pp.
  • Fall 1979, Synthetic Rubies, p. 206, 3pp.

Sapphire

  • March-April 1934, Sapphire (the 543 ct. Star of India pictured, p. 48), p. 47, 2pp.
  • March-April 1934, Straight Striae in Synthetic Sapphire, p. 53, 2pp.
  • -Dec. 1934, Sapphires and Sapphire Ball Bearings (Synthetic and Natural), p. 173, 2pp.
  • Summer 1936, A Substitute for Star Sapphires, p. 47, 1p.
  • Fall 1942, Local Peculiarities of Sapphires, by Gübelin, p. 34, 6pp.
    • Winter 1942, p. 50, 5pp.
    • Spring 1943, p. 66, 4pp.
  • Fall 1951, Large Sapphires from Australia Carved into Presidents’ Images by Kazanjian Bros., p. 101, 2pp.
  • Winter 1951, Australian Sapphire Fields not Fully Exploited, p. 125, 4pp.
  • Winter 1952, The Stuart Sapphire, p. 251, 1p.; The St. Edwards Sapphire, p. 254, 1p.
  • Fall 1956, The Yogo Sapphire Mine, Montana, p. 323, 8pp.
  • Summer 1959, Unusual Absorption Spectrum in Sapphire; a Flawless Sapphire Spectrum, p. 294, 1p.
  • Spring 1960, An Alexandrite-Like Natural Sapphire, p. 10, 2pp.
  • Summer 1962, A Star Sapphire-Blue by Day, Amethystine Violet by Night, p. 316, 2pp.
  • Fall 1962, A 2-½ •lb. Sapphire Found in Ceylon (Largest Recorded from Ceylon), p. 351, 1p.
  • Summer 1965, A Natural Sapphire that had a Greenish-White Fluorescence Similar to that of Synthetic Sapphire, p. 309, 2pp.
  • Fall 1965, A 10 ct. Sapphire from Montana, p. 331, 2pp.
  • Spring 1967, World’s Largest Star Sapphire (63,000 cts. or 27.78 lbs.) Found in Burma, p. 158, 1p.
  • Summer 1967, The Anakie Sapphire Fields, p. 173, 7pp.
  • Spring 1969, Notable Sapphires in the Crown Jewels of Iran, by Meen, p. 13, 2pp.
  • Spring 1969, Montana Sapphire Doublet, p. 24, 2pp.
  • Winter 1969, An 18 ct. Sapphire (Natural) which Fluoresces Like a Synthetic Sapphire, p. 120, 3pp.
  • Spring 1970, Sapphires Cause New Mining Boom in Australia, p. 166, 4pp.
  • Spring 1971, A Fluorescent Natural Sapphire, p. 274, 2pp.
  • Spring 1971, A 2½ lb. (5600 ct.) Cabochon Sapphire, p. 278, 1p.
  • Fall 1971, Dyed Blue Sapphires, p. 349, 1p.
  • Winter 1971, Glass-Like Swirls in a Natural Sapphire, p. 376, 1p.
  • Winter 1971, Color Zoning Gives Double Appearance, p. 384, 2pp.
  • Spring 1972, 3-Phase Inclusion in Purple Sapphire, p. 11, 1p.
  • Fall 1972, Unusual Natural Sapphire that Fluoresces Like a Synthetic Sapphire and Shows No Absorption Spectrum, p. 92, 2pp.
  • Winter 1973, Heavily Oiled Sapphires Fluoresce Like synthetic Sapphires, p. 236, 1p.
  • Spring 1975, Unusual Natural Sapphire that Fluoresces Milky-White Like a Synthetic Sapphire and Shows No Absorption Spectrum, p. 27, 1p.
  • Spring 1975, A 12.54 ct. Sapphire, Largest Reported from Montana, p. 27, 1p.
  • Spring 1976, An Imitation Sapphire Crystal Group Made of Faceted Synthetic Sapphire, p. 141, 1p.
  • Spring 1976, A Natural Sapphire with Curved Inclusions, p. 155, 1p.
  • Spring 1976, Carroll Chatham Says that New Flux-Grown Synthetic Sapphire Will Be Marketed Soon, p. 155, 1p.
  • Summer 1976, Dendritic Inclusions in Synthetic Sapphire, p. 171, 1p.
  • Fall 1976, Inclusion in Sapphire from Yogo Gulch, Montana, p. 200, 1p.
  • Spring 1979, Color Treated Blue Sapphires, p. 147, 1p.
  • Winter 1980, Mobile Three-Phase Inclusion in a Sapphire, p. 393, 4pp.
  • Winter 1980, Brief Notes On Chatham Flux Sapphires, p. 410, 2pp.

Spinel

  • Spring 1936, Blue-green Spinels (with R.I. of 1.73 and S.G. of 3.65), by Anderson, p. 8, 1p.
  • Summer 1938, Toughness of Spinel, p. 174, 1p.
  • Fall 1943, Identifying Synthetic Spinel, p. 103, 1p.
  • Summer 1944, Black Star Spinel, p. 150, 4pp.
  • Summer 1945, Absorption Spectra of Red Spinel, by Anderson, p. 232, 2pp.
    • Fall 1945, p. 257, 2pp.
    • Spring 1946, p. 301, 3pp.
  • Summer 1947, Synthetic Spinel, by Gübelin, p. 421, 4pp.
  • Summer 1950, Are Red Synthetic Spinels Available?, by Gübelin, p. 307, 4pp.
  • Winter 1950, Synthetic Red Spinel, by Crowningshield, p. 362, 7pp.
  • Winter 1952, Synthetic Red Spinel, by Gübelin, p. 236, 12pp.
  • Winter 1952, The Black Prince’s Ruby (actually spinel), p. 251, 3pp.
  • Summer 1953, More on Synthetic Red Spinel, by Eppler, p. 306, 1p.
  • Summer 1954, An Interesting Yellow-Green Synthetic Spinel, p. 56, 2pp.
  • Summer 1955, A Four-Rayed Star Spinel, by Switzer, p. 163, 3pp.
  • Summer 1957, Synthetic Colorless Spinel as a Diamond Substitute, p. 58, 1p.
  • Winter 1959, A 60 ct., Flawless Natural Red Spinel, p. 360, 1p.
  • Fall 1960, A 6-Rayed Star Purple Spinel, p. 71, 2pp.
  • Spring 1963, Synthetic Alexandrite-Like Spinel (Showing Absorption Spectrum), p. 26, 1p.
  • Winter 1965, Green Synthetic Spinel, p. 370, 2pp.
  • Spring 1969, Notable Spinels in the Crown Jewels of Iran, by Meen, p. 11, 3pp.
  • Spring 1970, Alexandrite-Like Synthetic Spinel (Showing Absorption Spectrum), p. 149, 2pp.
  • Spring 1970, Silk-Like Inclusions in Spinel, p. 152, 1p.
  • Spring 1971, A Lovely Orange-Red Spinel, p. 273, 1p.
  • Spring 1971, Unique Inclusions in Synthetic Spinel, p. 273, 2pp.
  • Summer 1971, Black Spinel (High R.I. and Hardness), p. 318, 1p.
  • Fall 1971, Synthetic Spinel and Strontium Titanate Doublets, p. 346, 4pp.
  • Fall 1971, Synthetic Red Spinel, p. 350, 2pp.
  • Spring 1972, Synthetic Green Spinel (Showing Unusual Absorption Spectrum), p. 26, 3pp.
  • Winter 1972, Red Spinel Absorption Spectrum, by Anderson, p. 100, 2pp.
  • Summer 1974, A Spinel with a Color Change, p. 314, 1p.
  • Fall 1974, Black Spinel, p. 345, 1p.
  • Fall 1974, Light Blue (Aquamarine Color) Synthetic Spinel, p. 349, 1p.
  • Summer 1977, A Pinkish-Orange Padparadscha Colored Synthetic Spinel, p. 308, 2pp.
  • Fall 1977, Layers of Synthetic Spinel Form a Cuvette, p. 329, 2pp.
  • Summer 1980, Negative Crystals in Synthetic Verneuil Spinel, p. 333, 1p.

Synthetic Corundum

  • Fall 1939, Lined Foil Back on Corundum Produces Asterism, p. 36, 1p.
  • Summer 1943, U.S. Develops Synthetic Corundum Industry, p. 88, 4pp.
  • Spring 1946, Synthetic Ruby and Sapphire, by Gübelin, p. 399, 4pp.
  • Fall 1947, The New “Linde Stars,” Ruby and Sapphire, p. 452, 5pp. (See also Winter 1947, p. 503, 1p.)
  • Spring 1951, Repeated Twinning Lines Seen in Synthetic Corundum, p. 25, 1p.
  • Fall 1952, Oriented Lines in Synthetic Corundum, by W. Plato, p. 223, 2pp.
  • Summer 1957, Synthetic White Colorless Corundum as Diamond Substitute, p. 57, 2pp.
  • Summer 1960, Synthetic Colorless Sapphire as a Diamond Substitute, p. 59, 2pp.
  • Winter 1960, A Triplet to Produce a Star Corundum, p. 119, 2pp.
  • Summer 1961, More on Star Sapphire Doublets, p. 180, 2pp.
  • Winter 1961, Synthetic Alexandrite-Like Sapphire, p. 249, 1p.
  • Spring 1962, Sintered Synthetic Corundum, p. 278, 1p.
  • Summer 1964, Polysynthetic Twinning in Synthetic Corundum, by Eppler, p. 169, 7pp.
  • Fall 1965, Synthetic Star Corundum between 1947 and 1952, p. 331, 2pp.
  • Summer 1967, Sintered Synthetic Corundum and its spectrum, p. 180, 2pp.
  • Fall 1967, Flux-Grown Synthetic Corundum, p. 206, 3pp.
  • Summer 1968, Identifying Yellow Synthetic Sapphire, p. 311, 2pp.
  • Spring 1970, Hydrothermal Pink Sapphire, p. 156, 2pp.
  • Winter 1970, Wisps in Synthetic Alexandrite-Like Corundum, p. 249, 2pp.
  • Spring 1971, Star Doublets (Corundum Lined to Produce Star), p. 280, 2pp.
  • Winter 1971, Doublets of Natural and Synthetic Corundum, p. 374, 2pp.
  • Spring 1972, More on Doublets of Natural and Synthetic Corundum, p. 12, 2pp.
  • Summer 1972, A New Synthetic (Pink) Corundum with Angular Parallel Inclusions, but Has Bubbles, p. 39, 2pp.
  • Summer 1974, Synthetic Dark-Green and Yellow Corundum, p. 299, 2pp.
  • Summer 1974, A New Synthetic White Star Corundum, p. 310, 3pp.
  • Fall 1974, Strong Concentric Growth Lines on the Back of a Synthetic Star Corundum, p. 347, 1p.
  • Summer 1975, A new Synthetic Pink Sapphire, p. 46, 2pp.

Synthetic Diamond

  • March-April 1935, Synthetic Diamonds, Historic and Modern, by Anderson, p. 213, 4pp.
  • Winter 1938, Supposed Synthetic Diamonds by W. Hershey tested, p. 195, 4pp.
  • Summer 1939, Comments on Synthetic Diamonds by W. Hershey, tested, p. 23, 2pp.
  • Fall 1939, Synthetic (?) Diamonds, by Shipley, p. 43, 2pp.
  • Winter 1943, Synthetic Diamond Question, Reopened in London, by Ball and Kraus, p. 114, 2pp.
  • Winter 1947, Diamond Synthesis Attempted at Harvard, p. 500, 1p.
  • Fall 1952, Germans Try to Synthesize Diamonds, p. 226, 1p.
  • Winter 1959, De Beers (S. Africa) Synthetic Diamonds, p. 373, 1p.
  • Spring 1960, Several Firms in Holland Make Synthetic Diamonds, p. 23, 1p.
  • Summer 1963, First European Plant for Synthetic Diamonds (Ireland), p. 62, 1p.
  • Winter 1963, General Electric Synthetic Diamonds work, p. 115, 1p.
  • Winter 1966, Synthetic Diamonds Now from Czechoslovakia, p. 125, 1p.
  • Winter 1966, Synthetic Diamonds from Ireland Improving, p. 125, 2pp.
  • Spring 1971, MEGA Synthetic Diamonds Produced in Utah, p. 292, 4pp.
  • Summer 1971, General Electric’s Cuttable Synthetic Diamonds and GIA First Reports, p. 302, 13pp.
  • Fall 1972, Diamond Synthesis by De Beers Research Labs, p. 68, 3pp.

Synthetic Emerald

  • May-June 1935, A Coated Emerald, p. 254, 1p.
  • July-Aug. 1935, Synthetic Beryl (Including Emerald), p. 281, 5pp.
  • -Dec. 1935, Emerald Filter Tested, p. 355, 1p.
  • Winter 1937, New Synthetic Emerald Developments, p. 131, 4pp.
  • Summer 1938, The Detection of Synthetic Emerald, p. 163, 5pp.
  • Spring 1941, New Synthetic Emerald from San Francisco (Chatham), p. 134, 1p.
  • Summer 1941, The Synthetic Emerald, by Gübelin and Shipley, p. 146, 5pp.
  • Fall 1942, Synthetic Emeralds Appear Commercially in San Francisco, p. 40, 2pp.
  • Winter 1943, “Indian Emeralds”-Crackled Quartz, Dyed, p. 118, 1p.
  • Spring 1944, Synthetic Emeralds Tested, p. 133, 2pp.
  • Spring 1946, Improvements in the Quality of Synthetic Emeralds, by Switzer, p. 305, 3pp.
  • Summer 1947, Synthetic Emeralds, by Gübelin, p. 421, 5pp.
  • Summer 1947, German Synthetic Emeralds, p. 436, 1p.
  • Summer 1947, Synthetic Emeralds Enter the American Market, p. 439, 1p.
  • Spring 1948, Nacken Synthetic Emeralds, p. 25, 1p.
  • Spring 1951, New Gem Substitute Resembles Emerald, p. 29, 1p.
  • Spring 1953, Peculiar Inclusions in Synthetic Emerald, p. 283, 1p.
  • Winter 1958, Ultra-Violet in Testing Synthetic Emeralds, p. 228, 1p.
  • Spring 1959, Caution in Testing Synthetic Emeralds, p. 265, 1p.
  • Spring 1960, The New Lechleitner Synthetic Emerald, by Crowningshield, p. 11, 12pp.
  • Winter 1960, Beryl With Synthetic Overgrowth, by Gübelin, p. 105, 9pp.
  • Fall 1962, Emeralds Coated with Plastic, p. 340, 1p.
  • Winter 1962, Emeralds with Green Plastic Pavilions, p. 379, 1p.
  • Winter 1962, Straight Color Banding in Chatham Emerald, p. 380, 2pp.
  • Spring 1963, Emerald with a Dark Green Adventurine Quartz Back, p. 23, 1p.
  • Fall 1963, A New Synthetic Emerald, p. 85, 2pp.
  • Fall 1963, Synthetic Emerald vs. Natural, p. 91, 1p.
  • Spring 1964, Developments in the Synthetic Emerald Field, by Liddicoat, p. 131, 7pp.
  • Spring 1964, Two New Synthetic Emeralds (Zerfass and Gilson), by Gübelin, p. 139, 10pp.
  • Fall 1964, Symerald (Lechleitner or Emerita) Overgrowth, p. 218, 1p.
  • Spring 1965, The New Linde Hydrothermal Emerald, p. 259, 7pp.
  • Fall 1965, Chatham Emeralds in High Temperature, p. 336, 2pp.
  • Winter 1965, Linde Hydrothermal Emeralds, p. 372, 1p.
  • Winter 1967, A New Synthetic Emerald?, p. 242, 1p.
  • Winter 1967, Gilson Synthetic Emerald, p. 245, 2pp.
  • Spring 1969, Gilson Synthetic Emerald, p. 28, 2pp.
  • Summer 1969, High Refractive Indices in Synthetic Emerald, p. 64, 2pp.
  • Summer 1969, Linde Hydrothermal Emerald, p. 65, 1p.
  • Summer 1969, Banded Glass Emerald Imitation, p. 68, 2pp.
  • Fall 1969, Odd Emerald Inclusions (?) (Linde), p. 100, 3pp.
  • Winter 1969, New Non-Fluorescent, High-Property Synthetic Emeralds, by Fryer, p. 106, 6pp.
  • Winter 1969, Banding in Non-Fluorescent High-Property Synthetic Emerald, p. 120, 2pp.
  • Winter 1969, New Hydrothermal Emerald (Linde), p. 123, 3pp.
  • Winter 1969, Synthetic Flux-Melt Emeralds (Gilson), p. 123, 2pp.
  • Winter 1969, A New Synthetic Flux-Melt Emerald with Flower-Like Inclusions, p. 130, 3pp.
  • Spring 1970, Parallel Growth in Synthetic Emerald (Gilson), p. 151, 1p.
  • Spring 1970, Zerfass Synthetic Emeralds (Flux Fusion), p. 162, 1p.
  • Summer 1970, New Hydrothermal Synthetic Emerald, p. 185, 3pp.
  • Fall 1970, Assembled Emerald Proves to be Linde, p. 226, 1p.
  • Fall 1970, More on Linde Hydrothermal Emerald, p. 233, 2pp.
  • Summer 1971, A Colorless Beryl with Green Plastic-Coated Back, p. 320, 1p.
  • Fall 1971, A Platinum Wire Left in a Synthetic Emerald, p. 349, 1p.
  • Fall 1971, Another Flux-Grown Synthetic Emerald (from Vancouver, Canada), p. 359, 2pp.
  • Winter 1971, Ferrer Glass Imitation Emeralds, p. 378, 2pp. (See also *Winter 1978, p. 366, 1p.)
  • Winter 1971, Beryl Triplets to Imitate Emeralds, p. 380, 1p.
  • Winter 1971, Parallel Growth Banding Typical in Flux-Grown Synthetic Emeralds, p. 382, 2pp.
  • Spring 1972, Non-Fluorescent Synthetic Emerald, p. 10, 2pp.
  • Summer 1972, Beryl Coated Emerald-Green with Plastic, p. 54, 2pp.
  • Spring 1973, Glass Imitation of Emerald Crystals, p. 136, 1p.
  • Spring 1973, Unusual Synthetic Emerald Inclusions, p. 139, 1p.
  • Spring 1973, Synthetic Emerald with Very Strong Zoning, Common, p. 149, 1p.
  • Summer 1973, A Rare Emerald Imitation (a Hollow Bead Filled with Crushed Emerald in oil), p. 185, 2pp.
  • Summer 1974, Emerald Imitations (Painted Quartz in Matrix, Filled Hollow Back, and Emerald-Green Fluorite), p. 300, 4pp.
  • Spring 1976, Another New Flux-Type Synthetic Emerald, p. 138, 2pp.
  • Fall 1976, A Spodumene (?) Crystal in a Synthetic Emerald, p. 214, 1p.
  • Fall 1976, Some Very Effective Emerald Imitations, p. 220, 2p.
  • Fall 1977, Pale Green Beryl Crystal Core-Drilled & Filled with Deep Green Cement, p. 328, 1p.
  • Spring 1979, Imitating Emerald, p. 154, 1p.
  • Fall 1979, Another Fake Matrix Emerald, p. 196, 2pp.

Topaz

  • Summer 1948, Topaz, p. 49, 3pp.
  • Summer 1948, A 1,463 ct. Egg Briolette Cut Blue Topaz to the Museum of Natural History, Largest Cut Topaz, p. 60, 1p.
  • Winter 1948, Topaz Colored by Radium, p. 122, 1p.
  • Summer 1956, Nigerian Topaz, by Webster, p. 291, 4pp.
  • Fall 1960, Cat’s-Eye Blue Topaz, p. 69, 1p.
  • Winter 1963, Hairlike Inclusions in Brown Topaz from Mexico, p. 104, 2pp.
  • Winter 1965, A Rare Hairlike Inclusion in Topaz from Mexico, p. 362, 2pp.
  • Spring 1967, Irradiated Topaz, p. 155, 2pp.
  • Fall 1973, Fade Test on Gamma Irradiated Topaz, p. 212, 2pp.
  • Winter 1973, Red-Orange Topaz, not Gamma Treated (?), (Shows Absorption Spectrum), p. 236, 1p.
  • Fall 1974, Inclusions of Albite and Phenakite in Gem Topaz From the Tarryall Mts., Colo., p. 337, 3pp.
  • Fall 1975, Unusual Twisted Hair-Like Inclusions in Topaz, p. 73, 2pp.

Tourmaline

  • Spring 1936, A New Alexandrite-Like Tourmaline Found, p. 7, 2pp.
  • Spring 1950, Tourmaline Cat’s-Eye Studied, p. 289, 1p.
  • Spring 1955, Recent Discovery of Fine Gem Tourmaline in Maine, p. 131, 6pp.
  • Winter 1955, Nodular Tourmalines, by Sinkankas, p. 237, 2pp.
  • Summer 1958, Historic Himalaya Tourmaline Mine (Calif.) Reopened, p. 163, 11pp.
  • Fall 1964, “Chameleonite” Tourmaline, Greenish-Brown to Brownish-Green by Day and Intense Brownish-Red to Reddish-Brown by Night, p. 214, 2pp.
  • Fall 1965, Intense Emerald-Green Tourmaline, p. 340, 2pp.
  • Summer 1966, A Fine Blue-Green Tourmaline from Mount Mica, Me., p. 43, 2pp. (See also Fall 1966, p. 70, 2pp.)
  • Winter 1967, Chrome Tourmaline of Tanzania, p. 242, 3pp.
  • Spring 1975, New Find of Gem Tourmaline from Newry Mt., Me., p. 19, 6pp.
  • Spring 1975, A Rock with Green Tourmaline and Ruby, Mixed, p. 27, 1p.
  • Fall 1977, A Tourmaline with No Dichroism, p. 330, 2pp.
  • Winter 1977, Imitation Maine Tourmaline, p. 364, 1p.
  • Fall 1980, Aschentrekker – The Ash-Drawer Tourmaline, by Betsy Barker, p. 375, 4pp.
  • Winter 1980, Exceptional 11 Carat Tri-Color Tourmaline, Pink, Colorless and Greenish-Blue, p. 400, 2pp.