Carnelian
Carnelian is a gemstone with the chemical formula SiO2. It has a Mohs hardness of 6.5-7 on Mohs scale and vitreous to waxy luster.
Carnelian properties
| Type | Gemstone |
|---|---|
| Chemical formula | SiO2 |
| Mohs hardness | 6.5-7 on Mohs scale |
| Luster | Vitreous to waxy |
| Typical colors | Red, orange, brown, and pale shades |
| Formation | Formed from the precipitation of silica in sedimentary environments |
| Rarity | 4 / 10 |
Mohs hardness 6.5–7 — hard
1 · Talc5 · Apatite10 · Diamond
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