gemstone

Polished multicolored jasper cabochon (likely brecciated or picture jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides and other inclusions

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; opaque red, cream, yellow, and dark gray-green patches; vitreous to waxy luster when polished. Fine-grained, with no visible crystals or cleavage; specific gravity about 2.6.

Identified October 17, 2026More gemstone →

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Physical properties

Formation & geological history

Jasper forms as silica-rich material fills cavities or replaces sediment and volcanic rock, with iron oxides producing varied colors. Its age and precise origin cannot be determined from the photo.

Uses & applications

Used for cabochons, beads, decorative objects, and collectibles; not generally used as a structural stone.

Geological facts

Jasper is an opaque variety of chalcedony, and trade names often describe its patterns rather than a distinct mineral species.

Field identification & locations

The polished surface and patchy, opaque color pattern fit jasper; confirm by hardness and a close look for fine-grained texture. Jasper occurs worldwide, including in the western United States, India, and Australia.