sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, exhibits vibrant green and brown hues, vitreous to dull luster, and a cryptocrystalline structure with conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, exhibits vibrant green and brown hues, vitreous to dull luster, and a cryptocrystalline structure with conchoidal fracture.
Formation & geological history
Formed from the precipitation of silica-rich fluids in sedimentary or volcanic environments, often accumulating in marine basins over millions of years.
Uses & applications
Widely used for ornamental carvings, polished spheres, jewelry, and lapidary collector specimens.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and decorative weaponry due to its durability and rich color patterns.
Field identification & locations
Identifiable by its dense, opaque appearance and distinct color banding; commonly sourced globally including in India, Madagascar, and the USA.
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Sandstone or Siltstone
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Shale
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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