Red Jasper

Physical Properties

Hardness: 6.5-7 (Mohs scale); Color: Brick red to brownish-red; Luster: Dull to vitreous; Crystal Structure: Microcrystalline/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91

Formation & Geological History

Formed through the infiltration of silica-rich fluids into sediment or volcanic ash. The red color is caused by the inclusion of hematite (iron oxide). This occurs in various geological ages from Precambrian to recent periods.

Uses & Applications

Used primarily as decorative gemstones, in jewelry (cabs, beads), as metaphysical 'healing' stones, and historically for tools and seals.

Geological Facts

Jasper was a favorite gem in the ancient world; its name can be traced back in Arabic, Persian, Greek, and Latin. It is often referred to as 'The Supreme Nurturer' in gemstone folklore.

Field Identification & Locations

Identify in the field by its opaque nature (never translucent), smooth conchoidal fracture, and inability to be scratched by a steel knife. Commonly found in riverbeds or desert regions globally, especially in the Western US, Brazil, and India.

Identified on: 4/13/2026

Mode: Standard