Mineral

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Hardness: 6.5–7 (Mohs scale); Color: Brick red to brownish-red; Luster: Dull to waxy; Crystal structure: Hexagonal (trigonal) - microcrystalline; Cleavage: None (conchoidal fracture); Specific gravity: 2.58–2.91

Hardness: 6
Color: Brick red to brownish-red
Luster: Dull to waxy

Identified March 29, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from hydrothermal solutions or within volcanic and sedimentary rocks. Its red color comes from iron (hematite) inclusions that occur during the cooling or sedimentation process over millions of years.

Uses & applications

Used primarily in jewelry (cabochons, beads), decorative carvings, and as a healing stone in metaphysical practices. Historically used for making tools and seals.

Geological facts

In ancient times, Red Jasper was known as the 'stone of endurance' and was used by warriors for protection. It is a variety of chalcedony and gets its name from the Greek 'iaspis', meaning spotted stone.

Field identification & locations

Identify in the field by its opaque red color and smooth, water-worn texture if found in riverbeds. It will not scratch with a copper penny or steel knife. Frequently found in the Western United States, India, Brazil, and South Africa.

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