sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7. Colors include brown, yellow, and grey with an opaque, waxy luster and cryptocrystalline structure.
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Physical properties
Mohs hardness of 6.5 to 7. Colors include brown, yellow, and grey with an opaque, waxy luster and cryptocrystalline structure.
Formation & geological history
Formed through the silification of sedimentary or volcanic deposits, often in marine or hydrothermal environments.
Uses & applications
Commonly used for ornamental carvings, polished cabochons, lapidary art, and mineral collecting.
Geological facts
Jasper has been used since ancient times for talismans, seals, and jewelry due to its durability and rich color patterns.
Field identification & locations
Identified by its conchoidal fracture, lack of cleavage, and high hardness that scratches glass. Found worldwide in riverbeds and ancient sedimentary rock formations.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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