mineral

Tumbled red/orange jasper

Jasper, microcrystalline quartz (chalcedony; SiO₂) with iron-oxide impurities

AI-generated identification · may be incorrect

Opaque orange-red, fine-grained, waxy to dull luster, and rounded from tumbling or natural abrasion. Mohs hardness 6.5–7; no visible cleavage; cryptocrystalline quartz structure; white areas may be quartz or alteration minerals.

Identified September 14, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids replace or cement volcanic and sedimentary material, with iron oxides producing the red-orange color. Deposits occur in many ages, commonly in volcanic terrains and hydrothermal environments.

Uses & applications

Used for beads, cabochons, carvings, polished stones, and ornamental objects; durable aggregate-quality jasper may also be used decoratively in construction.

Geological facts

Jasper is a variety of opaque chalcedony rather than a single mineral species. Color patterns and names such as ocean, brecciated, or picture jasper depend on texture and locality.

Field identification & locations

Identify it by its opacity, hardness, reddish iron staining, and inability to scratch with a steel knife easily; quartz crystal or glass can scratch it. Common sources include India, Madagascar, Brazil, Australia, and the western United States.