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 |
1.38ct (AQ2991)
1.19ct (AQ2990)
4.07ct (AQ2987)
2.73ct (AQ2985)
2.48ct (AQ2979)
1.95ct (AQ2971)
2.73ct - 8mm (BS0239)
2.16ct (BS0238)
7.15ct (ZI0556)
4.44ct (ZI0555)
4.05ct (AQ2915)
3.35ct (AQ2914)
5.53ct (AQ2912)
6.33ct (AQ2884)
1.67ct - 10x8mm (AQ2824)
2.71ct (AQ2822)
3.07ct - 9x7mm (BS0230)
19.48ct (PA1394)
43.31ct (PA1393)
14.25ct - 16x14mm (TN0632)
17.44ct (TN0630)
15.77ct (TN0626)
1.14ct (BS0223)
3.06ct - 7mm (BS0221)