|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | ruby | 9.00 | none | conchoidal | Transparent | none | 3.90 | glassy | red | white | faceted | oxides | Various shades of red corundum. |
|