sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque brick-red color due to iron oxide impurities, vitreous to dull luster, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque brick-red color due to iron oxide impurities, vitreous to dull luster, and conchoidal fracture.
Formation & geological history
Forms from the silica-rich precipitation in marine environments or hydrothermal veins, often associated with ancient ocean deposits.
Uses & applications
Widely used for tumbled decorative stones, cabochons, carvings, and low-cost jewelry.
Geological facts
Red jasper was historically used by ancient civilizations to carve protective amulets and seals.
Field identification & locations
Identified by its deep red opaque appearance, hardness scratching glass, and lack of visible crystal structure; commonly found globally in riverbeds and sedimentary deposits.
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