sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors, and a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors, and a conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks, often precipitating from silica-rich hydrothermal fluids.
Uses & applications
Used extensively in lapidary work, decorative carvings, cabochons, and as a popular collector specimen.
Geological facts
Jasper has been used since ancient times for talismans, seals, and jewelry across numerous civilizations.
Field identification & locations
Identified by its opacity, waxy luster, and rich color patterns; commonly found in riverbeds and mountainous regions worldwide.
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