sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, multicolored with red, yellow, and brown bands, and a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, multicolored with red, yellow, and brown bands, and a conchoidal fracture.
Formation & geological history
Formed from the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often dating back billions of years.
Uses & applications
Used primarily for ornamental carvings, cabochons, jewelry, and polished display specimens.
Geological facts
Jasper has been utilized by ancient civilizations since the 4th millennium BC for talismans, seals, and weaponry.
Field identification & locations
Identified by its waxy luster, smooth water-worn texture, and inability to be scratched by steel; commonly found in riverbeds and ancient marine deposits worldwide.
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