sedimentary
Jasper
Microcrystalline quartz, SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 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 to 7 on the Mohs scale, opaque luster, massive crystal structure with conchoidal fracture, and specific gravity around 2.65.
Formation & geological history
Formed through the silification of sedimentary deposits or volcanic ash, precipitating silica-rich fluids in marine or terrestrial environments.
Uses & applications
Used widely in ornamental carvings, cabochons, jewelry, and polished decorative objects.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry due to its toughness and fracture properties.
Field identification & locations
Identified by its opaque appearance, waxy luster, and wide array of earthy color patterns, commonly found in riverbeds and mountainous regions globally.
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