sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earthy colors due to mineral impurities, and a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earthy colors due to mineral impurities, and a conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks, where silica-rich fluids replace original material in deposits dating back billions of years.
Uses & applications
Used primarily in ornamental carving, cabochons, jewelry, and as a decorative stone.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness.
Field identification & locations
Identified by its waxy luster, lack of cleavage, and intricate color patterns; found worldwide in riverbeds and ancient volcanic deposits.
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