| Crystal structure |
| Rhombic |
| Hardness |
| 8 |
| Color |
| Colourless, various colours |
| Luster |
| Glassy |
| Crystal structure |
| Rhombic |
| Hardness |
| 8 |
| Color |
| Colourless, various colours |
| Luster |
| Glassy |