Mineral | Corrundum |
---|---|
Chemistry | Al2O3 |
Color | Greenish Blue - Bluish Green |
Refractive Index | 1.762 - 1.770 |
Birefringence | 0.008 - 0.010 |
Specific Gravity | 4.00 |
Mohs Hardness | 9.0 |
1.15ct - 6mm (TL0043)
1.32ct - 7x5mm (TL0028)
1.24ct - 7x5mm (TL0017)
1.72ct - 7x5mm (TL0013)
1.62ct (TL0011)
2.12ct (TL0006)