mineral

Tumbled orange chalcedony or jasper

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper

AI-generated identification · may be incorrect

Small, smoothly polished orange-red pebble with waxy to subdued luster; quartz hardness about 6.5–7 Mohs, no visible cleavage, cryptocrystalline structure, and specific gravity near 2.6. The uniform color may reflect iron oxides or artificial dye.

Identified August 10, 2026More mineral →

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Physical properties

Formation & geological history

Chalcedony forms when silica-rich groundwater fills cavities and fractures, while jasper is opaque silica formed from silicified sediments or volcanic material; ages vary widely. The rounded shape indicates human tumbling and polishing.

Uses & applications

Used as inexpensive cabochons, beads, carvings, tumbled stones, and decorative aggregate. Common pieces generally have modest collecting value.

Geological facts

Orange chalcedony is often marketed as carnelian, although true carnelian is typically translucent; opaque material is more properly called orange jasper or opaque chalcedony.

Field identification & locations

Common sources include India, Brazil, Madagascar, Uruguay, and the United States. Identify by its glass-scratching hardness, lack of cleavage, waxy appearance, and opaque-to-translucent orange body; photographic identification cannot distinguish natural color from dye.