sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7; opaque red to reddish-brown color due to iron oxide inclusions; vitreous to dull luster; trigonal crystal system with conchoidal fracture.
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Physical properties
Mohs hardness of 6.5 to 7; opaque red to reddish-brown color due to iron oxide inclusions; vitreous to dull luster; trigonal crystal system with conchoidal fracture.
Formation & geological history
Forms through the silica-rich precipitation of mineral-rich water in sedimentary environments, often replacing organic material or filling fissures.
Uses & applications
Widely used in ornamental carvings, cabochons, polished tumbled stones, and gemstone jewelry.
Geological facts
Red jasper has been utilized since ancient times for talismans and seals, referenced in various historical and religious texts.
Field identification & locations
Easily identified by its deep red color, high hardness, and waxy-to-vitreous luster; commonly found globally in hydrothermal veins and sedimentary deposits.
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