mineral

Tumbled amber-colored chalcedony or jasper

Microcrystalline quartz, SiO₂; likely iron-stained chalcedony/jasper

AI-generated identification · may be incorrect

Orange-brown, translucent to opaque, resinous-to-waxy luster with a smooth tumbled surface; quartz hardness about 6.5–7 Mohs, no visible cleavage, cryptocrystalline structure, and specific gravity around 2.6. The irregular shape and polish indicate human processing.

Identified September 6, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich groundwater fills cavities or replaces volcanic/sedimentary material, with iron oxides producing the orange-brown color; formation may range from Paleozoic to Cenozoic depending on locality. The image alone cannot establish a precise age or locality.

Uses & applications

Used for beads, cabochons, carvings, tumbling, and decorative objects; common material has modest jewelry value.

Geological facts

Its appearance may also overlap with carnelian, orange jasper, or even common glass, so identification from a photograph is provisional.

Field identification & locations

Look for consistent fine texture, a waxy luster, and translucency at thin edges; quartz should scratch steel and resist scratching by a knife. Common sources include Brazil, India, Madagascar, Mexico, and the western United States.