mineral

Small yellow-orange chalcedony pebble

Chalcedony, microcrystalline quartz (SiO₂); possibly carnelian

AI-generated identification · may be incorrect

Smooth, opaque to slightly translucent yellow-orange piece with a waxy to dull luster. Quartz hardness is 6.5–7 Mohs; trigonal crystal structure, but crystals are too fine-grained to see, and it has no distinct cleavage. Identification from the image is provisional.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Silica-rich fluids deposited microscopic quartz in rock cavities or fractures; chalcedony formed repeatedly through geological time in many settings.

Uses & applications

Used for beads, cabochons, carvings, and decorative objects; this tiny piece has little commercial value unless unusually attractive or part of a collection.

Geological facts

Carnelian is orange to reddish chalcedony, with its color commonly caused by iron impurities. The rounded shape may result from natural abrasion or tumbling.

Field identification & locations

Look for a waxy sheen, hardness sufficient to scratch glass, and conchoidal fracture; color alone cannot confirm carnelian. Chalcedony occurs worldwide, including Brazil, India, Madagascar, and the western United States.