sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors including red and brown, conchoidal fracture, and a specific gravity of 2.58 to 2.91.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors including red and brown, conchoidal fracture, and a specific gravity of 2.58 to 2.91.
Formation & geological history
Formed through the silification of sedimentary deposits or volcanic ash, rich in silica-bearing fluids precipitating in marine or terrestrial environments over millions of years.
Uses & applications
Commonly used in ornamental carvings, cabochons, jewelry, and polished decorative specimens.
Geological facts
Jasper has been utilized by ancient civilizations since the 4th millennium BC for seals, drills, and talismans.
Field identification & locations
Identified easily by its waxy luster, opaque nature, and inability to be scratched by a steel knife; found worldwide in riverbeds and mountainous regions.
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