sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque red to reddish-brown color with a vitreous to dull luster, and a microcrystalline trigonal crystal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque red to reddish-brown color with a vitreous to dull luster, and a microcrystalline trigonal crystal structure.
Formation & geological history
Formed through the silification of sedimentary deposits or volcanic ash, where silica-rich fluids replace organic material or fill cavities over millions of years.
Uses & applications
Commonly used for tumbled stones, cabochons in jewelry, ornamental carvings, and holistic healing collections.
Geological facts
Red color is primarily caused by iron oxide inclusions within the chalcedony matrix. Ancient civilizations often used it as a protective talisman.
Field identification & locations
Identified by its distinctive opaque red coloration, conchoidal fracture, and lack of visible crystal faces. Found worldwide including India, Brazil, and the USA.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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