sedimentary

Red Jasper with Quartz

Silicon Dioxide (SiO2) with Hematite impurities

AI-generated identification · may be incorrect

Hardness: 6.5-7 Mohs. Color: Brick red with white veins. Luster: Dull to Vitreous. Crystal Structure: Trigonal (Microcrystalline/Cryptocrystalline). Cleavage: None. Conchoidal fracture.

Hardness: 6
Color: Brick red with white veins
Luster: Dull to Vitreous

Identified July 9, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 Mohs. Color: Brick red with white veins. Luster: Dull to Vitreous. Crystal Structure: Trigonal (Microcrystalline/Cryptocrystalline). Cleavage: None. Conchoidal fracture.

Formation & geological history

Formed primarily in sedimentary environments where silica-rich fluids permeate through volcanic ash or sediment, often enriched with iron minerals like hematite which provide the red color. White bands are quartz vein intrusions.

Uses & applications

Commonly used for lapidary work, decorative cabochons, tumbled stones for metaphysical purposes, and as an ornamental landscaping stone.

Geological facts

Red jasper was historically known as the 'stone of endurance' and was used in ancient times for talismans. Its red color is derived from iron content within the silicate matrix.

Field identification & locations

Identify by its characteristic brick-red opacity and hardness (it will scratch glass). Often found in riverbeds, glacial tills, or coastal areas like the beaches of the Great Lakes or the Pacific Northwest.