sedimentary
Jasper
Silicon Dioxide (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 yellow, brown, and red, with 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 including yellow, brown, and red, with a conchoidal fracture.
Formation & geological history
Forms through the precipitation of silica-rich fluids within sedimentary deposits or volcanic cavities over millions of years.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry, and by mineral collectors.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness and fracture properties.
Field identification & locations
Can be identified in the field by its waxy luster, lack of cleavage, and resistance to steel scratching; commonly found in stream beds and mountainous regions worldwide.
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