Custom shield-cut colemanite 2, 9.33 cts, 14 x 12.1 mm, Boron, California. © The Gem Trader. Used with permission.
Colorless Birefringence Colemanite, 9.33 ct Faceted Shield Cut from United States
Custom shield-cut colemanite, 9.33 cts, 14 x 12.1 mm, Boron, California. © The Gem Trader. Used with permission.
Article: Colemanite Value, Price, and Jewelry Information
Credit: The Gem Trader
| Gemstone | Colemanite |
| Natural or man made | Natural |
| Origin | United States |
| Origin details | Boron, California |
| Carat Weight | 9.33 |
| Height | 14 |
| Width | 12.1 |
| Gem State | Faceted |
| Color | Colorless |
| Transparency | Transparent |
| Photo phenomena | Birefringence |