mineral

Red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

AI-generated identification · may be incorrect

Red-brown, opaque, with a dull to waxy luster and irregular fracture; Mohs hardness about 6.5–7. Quartz has a trigonal crystal structure, but jasper is too fine-grained to show visible crystals or cleavage.

Identified October 6, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids or sediment replace or cement material, with iron oxides imparting the red color. Jasper deposits occur in rocks of many ages; the specimen’s age and precise origin cannot be determined from the image.

Uses & applications

Used for beads, carvings, cabochons, and ornamental objects; lower-grade material is collected or used decoratively.

Geological facts

Jasper is a trade name for patterned, opaque chalcedony rather than a distinct mineral species.

Field identification & locations

Look for a dense, opaque red stone with subtle veining and no visible grains; it can be found in many regions, including Brazil, India, Australia, and the western United States. A photo cannot confirm the identification; hardness and streak tests can help distinguish it from softer red rocks.