mineral

Red-orange jasper pebble

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

AI-generated identification · may be incorrect

Opaque, earthy red-orange and yellow-brown, with dull to slightly waxy luster and no visible crystals; Mohs hardness about 6.5–7, specific gravity roughly 2.5–2.7. The rounded shape suggests natural water wear or tumbling, and its surface appears wet or polished.

Identified September 1, 2026More mineral →

Explore Red-orange jasper pebble 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

Jasper forms when silica-rich fluids cement fine sediment or replace volcanic and sedimentary material, with hematite/goethite producing the red and yellow colors. Deposits occur in many geological ages, commonly in Precambrian iron-rich formations and volcanic terrains.

Uses & applications

Used as an ornamental stone, cabochon, bead, carving material, and lapidary rough; attractive pieces commonly enter the jewelry and mineral-collecting markets.

Geological facts

Jasper is an opaque variety of chalcedony or microcrystalline quartz rather than a single mineral species. Color zoning and iron staining can resemble breccia, mookaite, or iron-rich chert.

Field identification & locations

Identify it by its opacity, iron-red coloration, fine-grained texture, hardness, and resistance to scratching by steel; it should not fizz with dilute acid. Common sources include India, Madagascar, Brazil, Australia, South Africa, and the western United States.