sedimentary
Jasper
Microcrystalline quartz, SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various reddish-brown colors due to iron impurities, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various reddish-brown colors due to iron impurities, and conchoidal fracture.
Formation & geological history
Formed through the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often dating from the Precambrian to Cenozoic eras.
Uses & applications
Used primarily in lapidary arts, ornamental carvings, and affordable jewelry.
Geological facts
Jasper has been used since ancient times for talismans, seals, and decorative weaponry across various civilizations.
Field identification & locations
Easily identified by its waxy luster, opaque body, and smooth conchoidal breakage; commonly found in riverbeds and mountainous regions worldwide.
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