Topaz
Topaz is a gemstone with the chemical formula Al2SiO4(F,OH)2. It has a Mohs hardness of 8 and vitreous luster.
Topaz properties
| Type | Gemstone |
|---|---|
| Chemical formula | Al2SiO4(F,OH)2 |
| Mohs hardness | 8 |
| Luster | Vitreous |
| Typical colors | Colorless, Blue, Yellow, Brown, Pink, Green |
| Formation | Igneous rocks, often in granite and pegmatites |
| Rarity | 4 / 10 |
Mohs hardness 8 — hard
1 · Talc5 · Apatite10 · Diamond
Mineralyst
Wondering what you found?
Point your camera at any gemstone 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
