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 |
7.51ct (ZI0710)
8.63ct (ZI0708)
4.07ct - 10x8mm (BS0255)
3.54ct - 8mm (BS0254)
2.90ct (BS0252)
4.09ct - 9x7mm (BS0250)
3.22ct (BS0249)
1.00ct - 8x6mm (AQ3293)
1.12ct - 6mm (AQ3284)
0.68ct - Pair (AQ3277)
0.93ct (AQ3276)
2.18ct (AQ3269)
1.43ct - 7x5mm Pair (AQ3266)
2.36ct (AQ3263)
1.12ct (AQ3254)
1.66ct (AQ3251)
1.47ct - 8x6mm (AQ3248)
2.71ct - Pair (AQ3246)
1.16ct - 8x6mm (AQ3244)
2.48ct - 9x7mm (AQ3241)
2.54ct (AQ3232)
6.21ct (AQ3208)
2.30ct - 8x6mm (BS0248)
11.13ct (AQ3103)