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 red, brown, yellow, and green, trigonal crystal system, conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various colors including red, brown, yellow, and green, trigonal crystal system, conchoidal fracture.
Formation & geological history
Formed from silica-rich solutions in sedimentary or volcanic environments, often through the replacement of organic material or deposition in marine environments.
Uses & applications
Used for ornamental objects, cabochons, carved items, and in jewelry.
Geological facts
Jasper has been used throughout history since ancient times for seals, talismans, and jewelry.
Field identification & locations
Identified by its opacity, smooth microcrystalline texture, and ability to take a high polish. Found worldwide in riverbeds, sedimentary deposits, and volcanic regions.
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