gemstone
Carnelian ring
Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)
AI-generated identification · may be incorrectThe polished cabochon is translucent reddish orange with a waxy to vitreous luster. Quartz hardness is about 6.5–7 Mohs; crystals are microscopic, with no visible cleavage. The setting appears to be metal.
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Physical properties
The polished cabochon is translucent reddish orange with a waxy to vitreous luster. Quartz hardness is about 6.5–7 Mohs; crystals are microscopic, with no visible cleavage. The setting appears to be metal.
Formation & geological history
Carnelian forms when silica-rich fluids deposit chalcedony in cavities and fractures, often in volcanic rocks. Its precise geological age and source cannot be determined from the image.
Uses & applications
Used for cabochon jewelry, beads, and ornamental carving; the ring’s metal setting is not identifiable from the image.
Geological facts
Carnelian’s color commonly comes from iron impurities, and heating can deepen or alter its reddish tones.
Field identification & locations
Identify by its smooth, translucent orange-red appearance and hardness; confirmatory tests are not possible from the image. Carnelian occurs worldwide, notably in India, Brazil, and Uruguay.
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