Carnelian (chalcedony variety of quartz)
gem · common
Quick facts
- Formula
- SiO2
- Hardness
- 7
- Luster
- Waxy to vitreous
- Colors
- Orange to reddish orange; often even in tone
Carnelian is a warm orange to red variety of chalcedony colored mainly by iron oxides and heat. It is a common ornamental stone used for beads and cabochons.
Waxy luster, tougher feel (hardness 7), and absence of play-of-color; may show faint banding or cloudy zones rather than a glassy ‘jelly’ look.
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