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 (BS0220)
2.54ct (BS0217)
3.50ct - 9x7mm (BS0216)
3.70ct (AQ2664)
3.04ct (AQ2651)
2.71ct - 9x7mm (BS0214)
5.38ct (AQ2589)
9.61ct - 12mm (TB0205)
7.20ct - Pair (AQ2531)
3.74ct (AQ2495)
1.23ct (TL0109)
1.18ct - 5mm (TL0099)
0.73ct - 4mm (TL0095)
1.54ct (TL0092)
0.93ct - 6x4mm (TL0088)
9.77ct - 14mm (AQ2472)
3.92ct (BR0088)
5.16ct (BS0208)
4.13ct (BS0202)
3.44ct (AQ2294)
28.65ct (AQ2287)
27.09ct (AQ2270)
13.86ct (AQ2269)
7.78ct (AQ2125)