Gypsum: hardness, streak, luster and crystal system
The properties that identify Gypsum: its Mohs hardness, luster, streak colour and crystal system.
| Mineral | Mohs hardness | Luster | Streak | Crystal system |
|---|---|---|---|---|
| Gypsum | 1.5–2 (defining mineral for 2) | Vitreous to silky, pearly, or waxy | White | Monoclinic |
Common questions
- How hard is Gypsum on the Mohs scale?
- 1.5–2 (defining mineral for 2).
- What luster does Gypsum have?
- Vitreous to silky, pearly, or waxy.
- What colour is the streak of Gypsum?
- White.
- What crystal system does Gypsum have?
- Monoclinic.
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