sedimentary

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs), Color: Deep red to brownish-red, Luster: Vitreous to dull, Crystal structure: Trigonal (microcrystalline), Cleavage: None (conchoidal fracture), Specific gravity: 2.58-2.91

Hardness: 6

Identified May 24, 2026More sedimentary →

Explore Red Jasper in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6.5-7 (Mohs), Color: Deep red to brownish-red, Luster: Vitreous to dull, Crystal structure: Trigonal (microcrystalline), Cleavage: None (conchoidal fracture), Specific gravity: 2.58-2.91

Formation & geological history

Formed from microcrystalline quartz and chalcedony that crystallized in pockets of volcanic rock or as precipitates in sedimentary environments over millions of years, with its color derived from iron impurities.

Uses & applications

Used primarily in lapidary work, jewelry making, ornamental carvings, and as a popular stone for chakra and metaphysical practices.

Geological facts

Red jasper was once known as the 'warrior's stone' and was historically used to tip spears and decorate breastplates for protection and courage.

Field identification & locations

Identify by its opaque red color and smooth, waxy surface when polished; it is harder than a steel knife. It is commonly found in India, Russia, Brazil, and the Southwestern United States.