Tourmaline: hardness, streak, luster and crystal system
The properties that identify Tourmaline: its Mohs hardness, luster, streak colour and crystal system.
| Mineral | Mohs hardness | Luster | Streak | Crystal system |
|---|---|---|---|---|
| Tourmaline | 7.0–7.5 | Vitreous, sometimes resinous | White | Trigonal |
Common questions
- How hard is Tourmaline on the Mohs scale?
- 7.0–7.5.
- What luster does Tourmaline have?
- Vitreous, sometimes resinous.
- What colour is the streak of Tourmaline?
- White.
- What crystal system does Tourmaline have?
- Trigonal.
Related
- Mineral identification properties
- Calcite: hardness, streak, luster and crystal system
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