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 |
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)
4.99ct - 11x9mm (BS0165)
3.07ct (BS0162)
1.08ct - 7x5mm (BS0161)
3.59ct - 9x7mm (BS0149)
2.00ct - 6mm (BS0112)