Hiddenite
From Antique Jewelry University
Hiddenite is the strongly pleochroic, bright green variety of spodumene. First discovered in North Caroline by W. E. Hidden in 1879.
Gemological information
| Gemological Information for Hiddenite | |
|---|---|
| Color | Green |
| Crystal Structure | Monoclinic |
| Refractive Index | 1.662 to 1.676 |
| Durability | Poor |
| Hardness | 6.5 to 7 |
| Similar Stones | Tourmaline, Peridot, Beryl |
| Treatments | Irradiation |
| Country of Origin | Afghanistan, Madagascar |
| Hiddenite Care | |
| Ultrasonic Cleaning | Never |
| Steam Cleaning | Never |
| Warm Soapy Water | Safe |
| Chemical Attack | Reacts slowly to Hydrofluoric Acid |
| Light Sensitivity | Irradiated Green fades quickly |
| Heat Sensitivity | Sensitive |
Sources
Gem Reference Guide, Los Angeles: Gemological Institute of America, 1988. Pp. 229-231.
Newman, Harold. An Illustrated Dictionary of Jewelry, New York: Thames and Hudson, 1981. Pp. 154-155.
Schumann, Walter. Gemstones of the World, New York: Sterling Publishing, Co., 1977. Pp. 114.