sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline structure, conchoidal fracture, and diverse colors caused by mineral impurities.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline structure, conchoidal fracture, and diverse colors caused by mineral impurities.
Formation & geological history
Formed from silica-rich sediments or volcanic ash, precipitated in marine environments or hydrothermal veins over millions of years.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry making, and as a decorative lapidary material.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and tools due to its toughness and ability to take a high polish.
Field identification & locations
Identify by its waxy luster, opaque nature, and hardness that easily scratches glass; found globally in riverbeds, ancient marine deposits, and volcanic regions.
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