Rock Identifier
Orange stone, possibly carnelian (Likely carnelian, an orange variety of chalcedony (microcrystalline quartz, SiO₂); identification is uncertain from the image) — gemstone
gemstone

Orange stone, possibly carnelian

Likely carnelian, an orange variety of chalcedony (microcrystalline quartz, SiO₂); identification is uncertain from the image

AI-generated identification · may be incorrect

Small, polished orange pebble with a waxy-to-glassy luster. If carnelian, hardness is about 6.5–7 Mohs, with no visible cleavage and a cryptocrystalline quartz structure.

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Physical properties

Small, polished orange pebble with a waxy-to-glassy luster. If carnelian, hardness is about 6.5–7 Mohs, with no visible cleavage and a cryptocrystalline quartz structure.

Formation & geological history

Carnelian forms when silica-rich fluids deposit chalcedony in cavities and fractures, often in volcanic rocks; such deposits occur across many geological ages.

Uses & applications

Used for beads, cabochons, carvings, and decorative objects; common polished pieces have modest value.

Geological facts

The image shows a smooth, uniformly orange specimen, but provides no translucency or diagnostic tests to confirm carnelian rather than another stone or material.

Field identification & locations

Carnelian is commonly found in Brazil, India, Uruguay, and Madagascar. Check for natural-looking translucency at thin edges and hardness near 7, while avoiding destructive tests on valued pieces.