mineral

Red jasper (likely tumbled)

Jasper, microcrystalline quartz/chalcedony (SiO₂), colored mainly by iron oxides

AI-generated identification · may be incorrect

Opaque brick-red to orange, smooth polished surface, dull to vitreous luster, hardness about 6.5–7 Mohs, no visible cleavage, cryptocrystalline quartz structure; typically specific gravity 2.5–2.7.

Identified August 10, 2026More mineral →

Explore Red jasper (likely tumbled) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms when silica-rich fluids cement or replace sediments and volcanic material, with iron producing the red color. Deposits range from Precambrian to younger geological ages.

Uses & applications

Used for carvings, cabochons, beads, tumbling, ornaments, and small decorative objects; common pieces have modest commercial value.

Geological facts

Jasper is a variety of chalcedony distinguished by its opacity and abundant impurities. The exact variety—such as red, brecciated, or ocean jasper—cannot be confirmed from this small photograph.

Field identification & locations

Common in silica-rich volcanic and sedimentary terrains worldwide, including India, Madagascar, Brazil, Australia, and the western United States. A glassy-looking but opaque red stone that resists scratching with a steel knife supports identification.