sedimentary
Jasper
Silicon Dioxide (SiO2) microcrystalline quartz
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, yellow to brown colors, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, yellow to brown colors, and conchoidal fracture.
Formation & geological history
Formed through the precipitation of silica-rich fluids in sedimentary environments or volcanic ash beds over millions of years.
Uses & applications
Used in ornamental carvings, cabochons, jewelry, and polished collector specimens.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative tools due to its durability and rich color.
Field identification & locations
Easily identified by its opaque yellow-brown color and waxy luster; commonly found in riverbeds and rock-hounding sites worldwide.
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