sedimentary
Red Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7, opaque red to reddish-brown color with waxy luster, and conchoidal fracture.
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Physical properties
Mohs hardness of 6.5 to 7, opaque red to reddish-brown color with waxy luster, and conchoidal fracture.
Formation & geological history
Forms from the precipitation of silica-rich fluids in sedimentary or hydrothermal environments, often incorporating iron oxide impurities.
Uses & applications
Widely used in ornamental carvings, cabochons, jewelry, and polished collector specimens.
Geological facts
Ancient cultures valued red jasper as a sacred talisman of strength and used it to carve protective amulets.
Field identification & locations
Identify by its rich red color, high hardness that scratches glass, and smooth waxy polish; found globally in stream gravels and hydrothermal veins.
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