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 yellow and brown, and conchoidal fracture with no cleavage.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors including yellow and brown, and conchoidal fracture with no cleavage.
Formation & geological history
Forms through the deposition of silica-rich fluids in sedimentary basins or volcanic environments over millions of years.
Uses & applications
Used primarily for ornamental carvings, cabochons, lapidary arts, and decorative objects.
Geological facts
Jasper has been used since antiquity for ancient seals, talismans, and jewelry due to its durability and rich colors.
Field identification & locations
Identified by its waxy luster, conchoidal fracture, and opacity; commonly found in riverbeds and mountainous regions worldwide.
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