Tuff
Tuff is a rock. It has a Mohs hardness of Variable, generally soft and dull to earthy luster.
Tuff properties
| Type | Rock |
|---|---|
| Mohs hardness | Variable, generally soft |
| Luster | Dull to earthy |
| Typical colors | Gray, brown, red, yellow |
| Formation | Formed from volcanic ash and debris, typically during explosive volcanic eruptions |
| Rarity | 4 / 10 |

Mineralyst
Wondering what you found?
Point your camera at any rock and Mineralyst identifies it in seconds — with guided follow-up questions for a confident answer.
- Build a collection
- Keep a wish list
- 5 photos per find
- Share with friends





