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 including reddish-brown, trigonal crystal system, and no distinct cleavage.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors including reddish-brown, trigonal crystal system, and no distinct cleavage.
Formation & geological history
Formed through the silification of sedimentary deposits or volcanic ash, occurring across various geological eras.
Uses & applications
Used extensively in ornamental carvings, cabochons, jewelry, and decorative lapidary arts.
Geological facts
Jasper has been utilized by ancient civilizations since the 4th millennium BC for seals, drills, and talismans.
Field identification & locations
Identified easily by its opaque, multicolored bands and high hardness; commonly found in riverbeds and mountainous regions worldwide.
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