sedimentary
Jasper
Silicon dioxide with impurities (microcrystalline quartz)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earthy tones and patterns, conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earthy tones and patterns, conchoidal fracture.
Formation & geological history
Formed from silica-rich sediments or volcanic ash, heavily altered by mineral-rich hydrothermal fluids over millions of years.
Uses & applications
Used widely in ornamental carvings, cabochons, jewelry, and polished decorative display pieces.
Geological facts
Ancient civilizations revered jasper as a sacred stone of protection and physical healing, often carving it into amulets.
Field identification & locations
Identify by its waxy luster, opaque nature, and inability to be scratched by steel; found globally in stream beds and mountainous regions.
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