sedimentary
Jasper
Silicon dioxide (Microcrystalline Quartz), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.58-2.91, exhibiting multicolored bands or patterns.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.58-2.91, exhibiting multicolored bands or patterns.
Formation & geological history
Forms through the deposition of silica-rich fluids in sedimentary basins or volcanic environments, often during hydrothermal activity over millions of years.
Uses & applications
Widely utilized in ornamental carvings, jewelry, lapidary arts, and as a durable decorative stone.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry. Its name derives from the Greek word for 'spotted stone'.
Field identification & locations
Identify in the field by its opacity, waxy luster, and colorful patterns lacking cleavage. Commonly found worldwide in riverbeds, ancient volcanic regions, and sedimentary deposits.
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