sedimentary
Jasper
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and specific gravity around 2.65.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and specific gravity around 2.65.
Formation & geological history
Formed through the deposition of silica-rich fluids in sedimentary environments or volcanic ash over millions of years.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry, and by specimen collectors.
Geological facts
Jasper has been used since ancient times for seals, drills, and talismans by various civilizations.
Field identification & locations
Identified by its conchoidal fracture, lack of cleavage, and diverse opaque earth-tone patterns; found worldwide in riverbeds and mountainous regions.
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