Colemanite: Boron, California (26.50). Photo © Joel E. Arem, PhD, FGA. Used with permission.
Green Colemanite, 26.50 ct Faceted Shield Cut from United States
Colemanite: Boron, California (26.50). Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: Colemanite Value, Price, and Jewelry Information
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Colemanite |
| Natural or man made | Natural |
| Origin | United States |
| Origin details | Boron, California |
| Carat Weight | 26.50 |
| Gem State | Faceted |
| Color | Green |
| Transparency | Transparent |