sedimentary
Jasper
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and specific gravity of 2.58 to 2.91.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and specific gravity of 2.58 to 2.91.
Formation & geological history
Formed from silica-rich fluids precipitating in sedimentary environments or volcanic ash beds over millions of years.
Uses & applications
Used extensively for ornamental carvings, cabochons, jewelry, and lapidary art.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative weapons.
Field identification & locations
Identified by its distinctive opaque banding or color patterns and hardness that scratches glass; found worldwide in riverbeds and mountainous regions.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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