Mineral | Corrundum |
---|---|
Chemistry | Al2O3 |
Color | Light - Deep Blue |
Refractive Index | 1.762 - 1.770 |
Birefringence | 0.008 - 0.010 |
Specific Gravity | 4.00 |
Mohs Hardness | 9.0 |
3.54ct - 8mm (BS0254)
2.90ct (BS0252)
4.09ct - 9x7mm (BS0250)
3.22ct (BS0249)
2.30ct - 8x6mm (BS0248)
5.56ct - 8mm Pair (BS0239)
3.07ct - 9x7mm (BS0230)
1.14ct (BS0223)
3.06ct - 7mm (BS0221)
3.54ct (BS0220)
2.54ct (BS0217)
3.50ct - 9x7mm (BS0216)
2.71ct - 9x7mm (BS0214)
5.16ct (BS0208)
4.13ct (BS0202)
4.18ct - 9x7mm (BS0200)
3.66ct (BS0194)
3.73ct (BS0188)
3.51ct (BS0179)
3.57ct (BS0174)
3.55ct - 9x7mm (BS0173)
4.56ct - 10x8mm (BS0172)
1.61ct - 7x5mm (BS0167)
5.62ct - 12x10mm (BS0166)