sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, earthy to vitreous luster, opaque transparency, conchoidal fracture, and colors ranging from brown, red, yellow, to green often with mottled or banded patterns.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, earthy to vitreous luster, opaque transparency, conchoidal fracture, and colors ranging from brown, red, yellow, to green often with mottled or banded patterns.
Formation & geological history
Formed through the accumulation of silica-rich sediments or volcanic ash, typically in marine environments, undergoing diagenesis and lithification over millions of years.
Uses & applications
Used primarily in lapidary work, decorative carvings, cabochons, and as a collector's mineral specimen.
Geological facts
Jasper has been used since ancient times to create seals, talismans, and jewelry, with mentions dating back to antiquity across various civilizations.
Field identification & locations
Found worldwide in riverbeds, ancient marine deposits, and mountainous regions; identifiable by its hardness, opacity, and smooth polished texture when water-worn.
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