sedimentary
Jasper
Silicon dioxide with impurities (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7; displays earthy to vitreous luster; microcrystalline quartz structure with no visible cleavage.
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Physical properties
Mohs hardness of 6.5 to 7; displays earthy to vitreous luster; microcrystalline quartz structure with no visible cleavage.
Formation & geological history
Formed via the precipitation of silica-rich fluids in sedimentary or volcanic environments over millions of years.
Uses & applications
Widely utilized in lapidary arts, ornamental carvings, polished cabochons, and as a collector specimen.
Geological facts
Iron and other mineral impurities create its intricate multicolored webbing, banding, and picturesque patterns.
Field identification & locations
Identified by its conchoidal fracture, lack of scratchability from steel, and opaque multicolored appearance; found globally.
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