sedimentary
Jasper
Silicon dioxide with impurities (Chalcedony)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7, opaque luster, microcrystalline structure, conchoidal fracture, specific gravity of 2.58 to 2.91.
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Physical properties
Mohs hardness of 6.5 to 7, opaque luster, microcrystalline structure, conchoidal fracture, specific gravity of 2.58 to 2.91.
Formation & geological history
Formed through the deposition of silica-rich fluids in sedimentary basins or volcanic cavities over millions of years.
Uses & applications
Widely used in ornamental carvings, cabochons, jewelry, and as a collectible specimen.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative items due to its durability and rich color patterns.
Field identification & locations
Identified by its opaque nature, high hardness, and varied earthy colors; commonly found in riverbeds and mountainous regions worldwide.
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