mineral

Red jasper (likely hematite-rich jasper)

Microcrystalline quartz (SiO₂) with iron oxides, chiefly hematite (Fe₂O₃)

AI-generated identification · may be incorrect

Opaque brick-red to maroon, earthy to dull/waxy luster, massive and fine-grained; Mohs hardness about 6.5–7, no visible cleavage, and typically high density from iron oxides. The irregular, weathered surface may show gray or brown matrix.

Identified August 10, 2026More mineral →

Explore Red jasper (likely hematite-rich 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

Forms when silica-rich fluids cement or replace sediments and volcanic material, with iron oxidation producing the red color; individual pieces commonly formed over long Precambrian-to-young geological intervals. Exact age and locality cannot be determined from the photograph.

Uses & applications

Used as ornamental stone, carvings, cabochons, beads, tumbled stones, and lapidary material; historically used for tools and decorative objects.

Geological facts

Jasper is a variety of chert distinguished by abundant impurities, especially iron oxides. A magnetic response would suggest unusually abundant magnetite rather than ordinary jasper.

Field identification & locations

Identify by its opaque red color, fine texture, hardness, and ability to take a polish; it should resist scratching by a steel knife but be scratched by quartz. Common sources include India, Madagascar, Brazil, Australia, South Africa, and the western United States.