sedimentary

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Hardness: 6.5-7 on the Mohs scale. Color: Brick red to brownish-red with occasional white or dark veining due to iron oxide impurities. Luster: Vitreous to dull. Crystal structure: Trigonal (microcrystalline/cryptocrystalline). Cleavage: None (exhibits conchoidal fracture). Specific gravity: 2.58-2.91.

Hardness: 6
Luster: Vitreous to dull

Identified August 1, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the hydrothermal alteration or silica-rich precipitation of sedimentary deposits or volcanic ash, heavily infused with iron oxides over millions of years.

Uses & applications

Commonly used in ornamental carvings, cabochons for jewelry, tumbled stones, and holistic crystal healing practices.

Geological facts

Jasper has been used since ancient times for talismans, seals, and weaponry by civilizations such as the ancient Egyptians, Greeks, and Romans. Red jasper was frequently associated with strength, grounding, and vitality.

Field identification & locations

Can be identified in the field by its opaque red appearance, hardness exceeding that of steel, and smooth, conchoidal fracture. Commonly found in hydrothermal veins and sedimentary deposits worldwide, notably in India, Brazil, Russia, and the western United States.

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