Ruby
Physical properties
| Composition | Al203 + Cr2O3 |
|---|---|
| density | 3.99 – 3.98 g/cm3 |
| Hardness | Mohs 9 Knoop 2200 face // 1800 face ┴ C-axis |
| Size | 0.127 to 15.00 mm |
Non contractual illustration Non contractual illustration | Composition | Al203 + Cr2O3 |
|---|---|
| density | 3.99 – 3.98 g/cm3 |
| Hardness | Mohs 9 Knoop 2200 face // 1800 face ┴ C-axis |
| Size | 0.127 to 15.00 mm |
Non contractual illustration