Sapphires, Umba River, Tanzania (1.98, 1.40, 1.86, 3.41, 3.28 // 0.96, 3.77, 1.46, 2.56, 4.64). The leftmost and rightmost stones on the bottom row may be rubies. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Red Sapphire Faceted Cushion Cut from Tanzania
Sapphires, Umba River, Tanzania (1.98, 1.40, 1.86, 3.41, 3.28 // 0.96, 3.77, 1.46, 2.56, 4.64). The leftmost and rightmost stones on the bottom row may be rubies. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: Sapphire Value, Price, and Jewelry Information
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Sapphire, Corundum |
| Natural or man made | Natural |
| Origin | Tanzania |
| Origin details | Umba River |
| Gem State | Faceted |
| Color | Red, Orange, Green, Blue, Colorless |
| Transparency | Transparent |