sedimentary

Yellow-brown jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly iron-stained

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; mustard to ochre-brown with a dull-to-waxy luster and a pale quartz vein. Fine-grained, no visible crystals or cleavage; typically breaks with a curved, conchoidal fracture. The image alone cannot confirm the exact jasper variety.

Identified October 13, 2026More sedimentary →

Explore Yellow-brown jasper 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

Silica-rich sediment or volcanic material was lithified and silicified, with iron oxides producing the brown color; the specimen’s specific age and formation setting cannot be determined from the image.

Uses & applications

Used for beads, cabochons, carvings, and decorative stone; jasper is also collected as a lapidary rough.

Geological facts

Jasper is valued for its opaque colors and patterns; contrasting veins may be quartz or chalcedony.

Field identification & locations

Look for opaque, fine-grained silica, hardness sufficient to scratch glass, and conchoidal fracture; common in silica-rich volcanic and sedimentary terrains worldwide.