mineral

Reddish-brown stone, possibly jasper

Likely iron-oxide-stained microcrystalline quartz (SiO₂); exact identification is uncertain from the image

AI-generated identification · may be incorrect

Opaque, reddish-brown, matte to slightly waxy surface, with no visible crystals or cleavage. If jasper, hardness is about 6.5–7 Mohs and specific gravity about 2.6.

Identified October 13, 2026More mineral →

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Physical properties

Opaque, reddish-brown, matte to slightly waxy surface, with no visible crystals or cleavage. If jasper, hardness is about 6.5–7 Mohs and specific gravity about 2.6.

Formation & geological history

Jasper forms when silica-rich fluids deposit and cement microcrystalline quartz, often colored by iron oxides; it can occur in sedimentary or volcanic settings. The specimen’s age and formation setting cannot be determined from the image.

Uses & applications

Jasper is used for beads, cabochons, carvings, and decorative objects; this small unpolished piece has little industrial use.

Geological facts

The name jasper is used for opaque, patterned varieties of chalcedony, but a photo alone cannot distinguish it reliably from other iron-rich rocks.

Field identification & locations

Look for opacity, red coloration, and a hard, quartz-like surface; a scratch test or closer inspection would help confirm it. Jasper occurs worldwide, including in the United States, India, and Australia.