sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness 6.5-7 on the Mohs scale, earthy to vitreous luster, opaque appearance, and conchoidal fracture.
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Physical properties
Hardness 6.5-7 on the Mohs scale, earthy to vitreous luster, opaque appearance, and conchoidal fracture.
Formation & geological history
Forms from the precipitation of silica-rich fluids in sedimentary basins or volcanic environments over millions of years.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry, and as a collector specimen.
Geological facts
Jasper has been used since ancient times for talismans, seals, and decorative weaponry by various civilizations.
Field identification & locations
Identified by its opaque, multicolored patterns and high hardness; commonly found in riverbeds and mountainous regions worldwide.
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