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- I & Z Jewelry Mfg. Co.
Country City New York NY
Symbol cartouche, diamond, diamond ring, frame, gemstone ring, ring, square
Shape cartouche, diamond, frame, square
Era c.1943
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- Ideal Jewelry Mfg. Co. Inc.
Country City Providence RI
Symbol cartouche, frame, octagon, rectangle
Shape cartouche, frame, octagon, rectangle
Era c.1922, c.1934 c.1950, c.1943
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- Imperial Knife Co.
Country City Providence RI
Era c.1934
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- Imperial Mfg. Co.
Country City Chicago IL
Symbol banner, cartouche, crown, frame
Shape cartouche, frame
Era c.1896, c.1915
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- Improved Products Mfg. Co.
Country City Providence RI
Symbol cartouche, circle, frame
Shape cartouche, circle, frame
Era c.1950
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- Indian Handcrafts
Country City Kansan City MO
Era c.1943
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- Ingomar Goldsmith & Co.
Country City New York NY
Symbol bird, diamond, gemstone, heart, wings
Shape diamond, heart
Era c.1896
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- Ingraham, E.B.
Country City Providence RI
Era c.1896, c.1915
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- Inman & Co., J.T.
Country City Attleboro MA
Symbol eye
Era c.1922
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- Inter-State Jewelry Mfg. Co.
Country City New York NY
Era c.1950
-
- International Jewelry Workers Union of America
Country City New York NY
Symbol acorns
Era c.1896, c.1915
-
- International Ring Co.
Country City New York NY
Era c.1943
-
- International Silver Co.
Country Era e.1898
Symbol cartouche, frame, oval
Shape cartouche, frame, oval
-
- Irons & Russell Inc.
Country City Providence RI
Symbol cartouche, diamond, frame, kite, lozenge
Shape cartouche, diamond, frame, kite, lozenge
Era c.1896 c.1934 c.1950, c.1943
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- Irving Novelty Corp.
Country City New York NY
Symbol banner, cartouche, flag, frame, triangle
Shape cartouche, frame, triangle
Era c.1934
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- Iskin Mfg. Co. Inc.
Country City Philadelphia PA
Symbol cartouche, circle, frame, laurel, seal
Shape cartouche, circle, frame
Era c.1950, c.1943
