gemstone

Polished orange stone, possibly carnelian

Uncertain from the image; carnelian is orange chalcedony, microcrystalline SiO₂

AI-generated identification · may be incorrect

Small polished, rounded orange-peach piece with a pale band or patch; smooth, slightly translucent appearance. If carnelian, hardness is about 6.5–7 Mohs and luster is waxy to vitreous; crystal structure is microscopic quartz.

Identified October 13, 2026More gemstone →

Explore Polished orange stone, possibly carnelian in the encyclopedia →

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Physical properties

Formation & geological history

Carnelian forms when silica-rich fluids deposit chalcedony in rock cavities, often in volcanic settings; its age depends on the deposit and cannot be determined visually.

Uses & applications

Polished stones are used in beads, cabochons, jewelry, and collecting.

Geological facts

Orange coloration in carnelian commonly comes from iron impurities; the pictured piece could also be another orange stone, so a firm identification needs testing.

Field identification & locations

The polished surface obscures diagnostic features. Check translucency and hardness, and inspect for banding; common carnelian sources include India, Brazil, and Uruguay.