sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, opaque luster, massive crystal structure with conchoidal fracture, and specific gravity around 2.65.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque luster, massive crystal structure with conchoidal fracture, and specific gravity around 2.65.
Formation & geological history
Formed from silica-rich solutions precipitating in marine or volcanic environments, often during the Proterozoic eon or later.
Uses & applications
Used primarily for ornamental carvings, polished cabochons in jewelry, and decorative landscaping stones.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry components by various civilizations.
Field identification & locations
Identified by its rich opaque colors and inability to be scratched by a steel blade; commonly found worldwide in riverbeds and ancient sedimentary deposits.
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