sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, red to brown color, vitreous to dull luster, cryptocrystalline structure with conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, red to brown color, vitreous to dull luster, cryptocrystalline structure with conchoidal fracture.
Formation & geological history
Forms from the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often dating back millions of years.
Uses & applications
Used in ornamental carvings, jewelry, cabochons, and as a popular decorative stone for collectors.
Geological facts
Red jasper gets its distinct color from iron inclusions. Ancient civilizations used it frequently for talismans and seals.
Field identification & locations
Easily identified by its opaque nature and waxy luster, commonly found in riverbeds and ancient sedimentary deposits worldwide.
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