mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Hardness: 6.5-7 (Mohs scale); Color: Brick red to brownish-red; Luster: Vitreous to dull (waxy when polished); Crystal Structure: Hexagonal (Trigonal); Cleavage: None; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Brick red to brownish-red
Luster: Vitreous to dull (waxy when polished)

Identified March 14, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs scale); Color: Brick red to brownish-red; Luster: Vitreous to dull (waxy when polished); Crystal Structure: Hexagonal (Trigonal); Cleavage: None; Specific Gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica into cracks and cavities within volcanic or sedimentary rocks, often during hydrothermal processes or the slow replacement of other materials. Its age spans from Precambrian to modern formations depending on the deposit.

Uses & applications

Primarily used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and as a popular choice for 'pocket stones' in metaphysical markets.

Geological facts

In ancient times, Jasper was considered the 'supreme nurturer.' It gets its deep red color specifically from the high concentration of iron oxide (Hematite) inclusions within the microcrystalline quartz structure.

Field identification & locations

Identify in the field by its opaque brick-red color and conchoidal (shell-like) fracture pattern. Common locations include Brazil, India, Madagascar, and the Southwestern United States. It cannot be scratched by a steel knife, which helps distinguish it from softer red stones.

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