| Mineral | Corrundum |
|---|---|
| Chemistry | Al2O3 |
| Color | Red - Vivid Red |
| Refractive Index | 1.762 - 1.770 |
| Birefringence | 0.008 - 0.010 |
| Specific Gravity | 4.00 |
| Mohs Hardness | 9.0 |
6.08ct (LG8-38)
5.06ct (LG8-37)
3.01ct - 9x7mm (LG8-31)
3.06ct - 9x7mm (LG8-29)
4.02ct (LG8-28)
3.05ct (LG8-25)
3.07ct (LG8-22)
3.11ct (LG8-21)
3.04ct (LG8-19)
2.40ct - 7mm (LG8-17)
3.25ct - 10x8mm (LG8-15)
3.03ct (LG8-14)
3.33ct (LG8-13)
3.11ct - 9x7mm (LG8-10)
3.53ct (LG8-09)
5.04ct - 11x9mm (LM6-09)
2.67ct - 10x8mm (MR0195)
2.56ct - 9x7mm (PG0577)
5.00ct (PG0576)
5.06ct - 11x9mm (PG0574)
3.19ct (LM6-55)
4.09ct (LM6-45)
4.60ct - 10x8mm (LM6-43)
5.08ct (LM6-38)