sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, earthy luster, opaque, and features conchoidal fracture with variegated colors.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, earthy luster, opaque, and features conchoidal fracture with variegated colors.
Formation & geological history
Formed from silica-rich sediments or volcanic ash, precipitated in marine environments during various geological eras.
Uses & applications
Used primarily for ornamental carvings, cabochons, decorative jewelry, and as a tumbling stone.
Geological facts
Jasper has been used since ancient times for seals, drills, and talismans by various civilizations.
Field identification & locations
Identified by its distinctive opacity and banded or patterned coloration, commonly found in riverbeds and mountainous regions.
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