sedimentary
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
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
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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.
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