mineral

Possible tumbled jasper or agate

Microcrystalline quartz (chalcedony), chiefly SiO₂

AI-generated identification · may be incorrect

Orange-tan, opaque to slightly translucent, with a dull-to-waxy luster and likely conchoidal fracture; quartz hardness is about 7 Mohs and specific gravity about 2.6. The image is too blurred to confirm banding, grains, or crystal structure.

Identified August 17, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed when silica-rich groundwater filled cavities or fractures in volcanic rock, later becoming chalcedony/jasper; formation may range from Paleozoic to Cenozoic depending on locality. Its pointed shape appears human-shaped, tumbled, or naturally worn.

Uses & applications

Used for cabochons, carvings, beads, polished stones, and decorative objects; jasper and common agate generally have modest commercial value.

Geological facts

Orange coloration commonly comes from iron oxides or hydroxides. A glassy conchoidal chip, lack of cleavage, and inability to scratch it with a steel knife support quartz-rich material.

Field identification & locations

Commonly found in volcanic terrains and alluvial gravels worldwide, including Brazil, Madagascar, India, Mexico, and the western United States; inspect for translucency, banding, and a quartz-like fracture.