mineral

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Hardness: 6.5-7 on Mohs scale; Color: Red, brown-red, often with dark banding; Luster: Vitreous to waxy; Crystal structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91

Hardness: 6
Color: Red, brown-red, often with dark banding
Luster: Vitreous to waxy

Identified June 30, 2026More mineral →

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Physical properties

Formation & geological history

Formed via the deposition of silica from hydrothermal solutions or in sedimentary environments where volcanic ash or fine sediment is saturated with silica. The red color comes from iron oxide (hematite) inclusions. Jasper dates back to various geological periods from Precambrian to recent.

Uses & applications

Used extensively in jewelry as cabochons, for ornamental carvings, desktop decorations, and as a healing stone in metaphysical communities. Historically used for making tools like scrapers and arrowheads.

Geological facts

Red Jasper was known as the 'rain-bringer' in some ancient cultures. It has been used for thousands of years in seals, amulets, and decorative arts across Egyptian, Greek, and Roman civilizations.

Field identification & locations

Identified in the field by its opaque nature (unlike translucent carnelian), smooth waxy feel, and deep red color. It is commonly found in areas with volcanic activity or ancient sedimentary basins; notable locations include India, Brazil, USA, and South Africa.

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