sedimentary

Brecciated jasper (likely picture jasper)

Silica-rich microcrystalline quartz, SiO₂, with iron-oxide staining; brecciated jasper

AI-generated identification · may be incorrect

Opaque cream, tan, and rusty-brown material with angular dark fracture lines and a dull to waxy luster. Quartz hardness is about 6.5–7 Mohs; its crystals are microscopic, and it has no distinct cleavage. The photo alone cannot confirm the precise jasper variety.

Identified October 10, 2026More sedimentary →

Explore Brecciated jasper (likely picture 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 fractured and later cemented or replaced by silica, with iron oxides lending the warm colors. Jasper deposits form in varied geological settings and ages.

Uses & applications

Suitable for lapidary cutting, cabochons, beads, and decorative objects; jasper is also collected as a specimen.

Geological facts

Jasper is an opaque variety of chalcedony, a microcrystalline form of quartz. The angular pattern is characteristic of brecciation, though the image cannot establish its exact origin.

Field identification & locations

Look for opaque, silica-hard material with a waxy surface and fracture patterns; it should scratch glass and resist a steel knife. Jasper is found worldwide, including in the western United States, Australia, and Brazil.