A mix of rough sapphire stones and finished gems from Rock Creek, Montana. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Orange Sapphire Faceted from United States
A mix of rough sapphire stones and finished gems from Rock Creek, Montana. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: What are the Best Rough Sapphire Stones?
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Sapphire, Corundum |
| Natural or man made | Natural |
| Origin | United States |
| Origin details | Rock Creek, Montana |
| Gem State | Rough |
| Color | Orange, Yellow, Blue |
| Transparency | Transparent |