sedimentary
Jasper
Cryptocrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors, and a conchoidal fracture without distinct cleavage planes.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors, and a conchoidal fracture without distinct cleavage planes.
Formation & geological history
Forms through the precipitation of silica-rich fluids in sedimentary basins or volcanic environments, often dating from the Precambrian to Cenozoic eras.
Uses & applications
Commonly used for ornamental carvings, polished cabochons in jewelry, and decorative stone items.
Geological facts
Jasper has been utilized by ancient human civilizations since prehistoric times for making tools, weapons, and decorative talismans.
Field identification & locations
Identified easily by its opaque, multicolored earthy appearance and high hardness; found worldwide in riverbeds and mountainous regions.
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