Petoskey Stone
Petoskey Stone is a fossil. It has a Mohs hardness of 6 - 7 (Mohs scale) and dull to subvitreous luster.
Petoskey Stone properties
| Type | Fossil |
|---|---|
| Mohs hardness | 6 - 7 (Mohs scale) |
| Luster | Dull to subvitreous |
| Typical colors | Gray, tan, brown |
| Formation | Fossilized coral deposits from the Devonian period |
| Rarity | 5 / 10 |
Mohs hardness 6–7 — hard
1 · Talc5 · Apatite10 · Diamond
Mineralyst
Wondering what you found?
Point your camera at any fossil 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
