sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones including red, brown, and yellow, with a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones including red, brown, and yellow, with a conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic deposits, often precipitating from silica-rich fluids in marine or hydrothermal environments.
Uses & applications
Used primarily for ornamental carvings, cabochons, jewelry, and lapidary art.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness and ability to take a high polish.
Field identification & locations
Identify by its waxy luster, lack of transparency, and distinct multicolored patterns. Found globally in riverbeds, desert varnish, and ancient sedimentary formations.
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