mineral

Tumbled brecciated jasper (likely)

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with pale quartz/chalcedony veins

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; reddish-brown and cream, opaque with a waxy to vitreous polish. Microcrystalline quartz; no visible cleavage and typically conchoidal fracture. Exact identification is uncertain from the image alone.

Identified September 29, 2026More mineral →

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Physical properties

Formation & geological history

Silica-rich fluids filled fractures in older rock and hardened into jasper and quartz/chalcedony; the pebble was later naturally rounded or mechanically tumbled. The rock’s age and original geological setting cannot be determined from the photo.

Uses & applications

Used for beads, cabochons, ornaments, and lapidary collections; generally not an industrial or construction material.

Geological facts

Jasper’s colors commonly result from iron oxides, while contrasting veins or fragments create its patterned appearance.

Field identification & locations

The polished, opaque red-brown body and pale fracture-filling pattern are consistent with brecciated jasper. Similar jasper occurs worldwide; confirm with hardness and locality information.