mineral

Red jasper (probable polished chalcedony/jasper)

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

AI-generated identification · may be incorrect

Opaque to slightly translucent red-orange material with a waxy to vitreous polish; quartz hardness is about 6.5–7 Mohs, with no visible cleavage and conchoidal fracture. The image is strongly red-lit and out of focus, so exact identification is limited.

Identified August 23, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids replace or fill cavities in volcanic or sedimentary rocks, while hematite or limonite produces the red color. Deposits occur in many ages, especially hydrothermal and volcanic settings.

Uses & applications

Used for cabochons, beads, carvings, ornamental objects, and tumbled stones; massive jasper has minor decorative-stone uses. Common pieces generally have modest value.

Geological facts

Jasper is a variety of opaque chalcedony rather than a single mineral species. Patterns and names such as brecciated, orbicular, ocean, or bloodstone-related material reflect texture or appearance.

Field identification & locations

Identify by its dense, opaque red body color, fine grain, lack of cleavage, and resistance to scratching by steel; quartz or glass can scratch it. Common sources include India, Madagascar, Brazil, Australia, the United States, and Mexico.