sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various dark red or brown colors, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various dark red or brown colors, and conchoidal fracture.
Formation & geological history
Formed through the precipitation of silica-rich fluids in sedimentary or volcanic environments over millions of years.
Uses & applications
Commonly used for ornamental carvings, polished cabochons, jewelry, and lapidary collections.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components due to its toughness.
Field identification & locations
Identify by its waxy luster and opaque red-brown tones; found worldwide in riverbeds and ancient seabed deposits.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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