Pietersite
Pietersite is a gemstone. It has a Mohs hardness of 7 and vitreous to silky luster.
Pietersite properties
| Type | Gemstone |
|---|---|
| Mohs hardness | 7 |
| Luster | Vitreous to silky |
| Typical colors | Brown, blue, gold, with chatoyancy |
| Formation | Pietersite is a variety of chalcedony formed from the metamorphosed fibers of asbestos and quartz. |
| Rarity | 7 / 10 |
Mohs hardness 7 — hard
1 · Talc5 · Apatite10 · Diamond
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