sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, red to brown color, waxy luster, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, red to brown color, waxy luster, and conchoidal fracture.
Formation & geological history
Formed from silica-rich solutions precipitating in sedimentary environments or hydrothermal veins.
Uses & applications
Used primarily for ornamental carvings, cabochons, jewelry, and polished display specimens.
Geological facts
Jasper has been used since antiquity for seals, talismans, and decorative art objects.
Field identification & locations
Identify by its opaque nature, vibrant color patterns, and hard, smooth weathered surface found in river gravels.
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