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 tones of brown and red, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of brown and red, 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 primarily in ornamental carvings, cabochons, lapidary arts, and gemstone collecting.
Geological facts
Jasper has been used by ancient civilizations since the 4th millennium BC for making tools, seals, and jewelry.
Field identification & locations
Identify by its waxy luster, opaque nature, and inability to be scratched by a steel knife; commonly found in riverbeds and gravel deposits worldwide.
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