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 from silica-rich sediments or volcanic ash accumulating in marine environments, hardened over millions of years.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry, and as a popular collector specimen.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry due to its durability and smooth fracture.
Field identification & locations
Identified by its opaque appearance, conchoidal fracture, and lack of cleavage; commonly found worldwide in riverbeds and sedimentary deposits.
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