sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale), Color: Brick red to brownish-red with banding, Luster: Dull to waxy, Crystal Structure: Microcrystalline/Cryptocrystalline, Fracture: Conchoidal

Hardness: 6

Identified July 9, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: Brick red to brownish-red with banding, Luster: Dull to waxy, Crystal Structure: Microcrystalline/Cryptocrystalline, Fracture: Conchoidal

Formation & geological history

Formed from the deposition of silica-rich fluids in volcanic or sedimentary environments, acquiring its red color from high iron content (hematite). Many specimens date back to the Precambrian or Paleozoic eras.

Uses & applications

Commonly used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and as a grounding stone in metaphysical practices.

Geological facts

Red Jasper is a variety of chalcedony. In ancient times, it was known as the 'bringer of courage' and was often used to adorn the hilts of swords and amulets.

Field identification & locations

Identify by its matte finish when raw, smooth conchoidal fracture, and inability to be scratched by a steel knife. It is frequently found in gravel deposits, riverbeds, and desert regions worldwide, particularly in India, Brazil, and the USA.