sedimentary

Red Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale with an opaque, brick-red to brownish-red color and vitreous to dull luster. It has a trigonal crystal system and conchoidal fracture with no true cleavage.

Identified October 24, 2026More sedimentary →

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Physical properties

Hardness of 7 on the Mohs scale with an opaque, brick-red to brownish-red color and vitreous to dull luster. It has a trigonal crystal system and conchoidal fracture with no true cleavage.

Formation & geological history

Formed via the precipitation of silica-rich fluids in marine or hydrothermal environments, often incorporating iron oxide impurities that create its distinct red coloration.

Uses & applications

Widely utilized for ornamental carvings, polished tumbled stones, cabochons in jewelry, and geological specimen collecting.

Geological facts

Red jasper has been valued since ancient times as a protective talisman and seal stone, frequently mentioned in various historical lapidary texts.

Field identification & locations

Easily identified by its opaque red appearance, high hardness scratching glass, and lack of visible crystal faces in raw form. It is globally distributed with notable deposits in India, Brazil, and the USA.