Ruby
Properties:
| Formula: Al2O3 | Luster: Vitreous to adamantine |
| Hardness: 9 | Streak: Colorless (harder than the streak plate) |
| Cleavage: None, but may exhibit parting | Density: 3.97-4.05 |
Showing the single result
| Formula: Al2O3 | Luster: Vitreous to adamantine |
| Hardness: 9 | Streak: Colorless (harder than the streak plate) |
| Cleavage: None, but may exhibit parting | Density: 3.97-4.05 |
Showing the single result
