sedimentary

Red Jasper

Microcrystalline Quartz (SiO2) with iron oxide inclusions

Hardness: 6.5-7 on Mohs scale. Color: Opaque red, brownish-red, or reddish-orange, often with dark veins or quartz/chalcedony patches. Luster: Vitreous to dull. Crystal structure: Trigonal (microcrystalline/cryptocrystalline aggregate). Cleavage: None (exhibits conchoidal fracture). Specific gravity: 2.58-2.91.

Hardness: 6
Luster: Vitreous to dull

Identified August 2, 2026More sedimentary →

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Physical properties

Formation & geological history

Forms primarily from the accumulation of silica-rich sediments or volcanic ash, heavily rich in iron oxides which impart the red color, often precipitating out of solution in marine environments or hydrothermal veins over millions of years.

Uses & applications

Commonly used for tumbled stones, decorative ornaments, carvings, cabochons in jewelry, and metaphysical practices.

Geological facts

Jasper has been prized since ancient times for amulets and seals, mentioned in various historical texts including biblical and Greek records. Red jasper specifically was often worn by ancient warriors for courage and stamina.

Field identification & locations

Can be identified in the field by its opaque red color, hardness that scratches glass, and smooth conchoidal fracture. Found worldwide, with notable deposits in India, Brazil, Russia, France, and the USA.

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