sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various colors including green, red, and yellow, and a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various colors including green, red, and yellow, and a conchoidal fracture.
Formation & geological history
Formed through the accumulation of silica-rich sediments or volcanic ash, often precipitated in marine environments over millions of years.
Uses & applications
Commonly used for ornamental carvings, cabochons, jewelry, and as a decorative stone.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative items due to its durability and rich colors.
Field identification & locations
Identify by its waxy luster, conchoidal fracture, and opacity; commonly found in hydrothermal veins and sedimentary deposits worldwide.
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