sedimentary
Jasper
Silicon dioxide (Microcrystalline quartz, SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors including brown, yellow, and red, with a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors including brown, yellow, and red, with a conchoidal fracture.
Formation & geological history
Forms through the precipitation of silica-rich fluids within sedimentary or volcanic environments over millions of years.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry, and as a decorative lapidary stone.
Geological facts
Jasper has been used since antiquity for ancient seals, talismans, and decorative tools.
Field identification & locations
Identified by its microcrystalline texture, lack of cleavage, and smooth opaque appearance; commonly found globally in riverbeds and ancient mineral deposits.
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