sedimentary
Jasper
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones including brown, red, and yellow, with a microcrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones including brown, red, and yellow, with a microcrystalline structure.
Formation & geological history
Formed by the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often over millions of years.
Uses & applications
Used primarily for ornamental carvings, polished cabochons in jewelry, and as a decorative display specimen for collectors.
Geological facts
Jasper has been utilized by ancient civilizations since the 4th millennium BC for seals, drills, and talismans. It is an aggregate of microgranular quartz.
Field identification & locations
Identify by its waxy luster, opaque nature, and inability to be scratched by steel. Found globally in riverbeds and mountainous regions.
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