sedimentary
Jasper
Microcrystalline quartz, SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, exhibits red, brown, and yellow colors due to iron impurities, and lacks visible crystal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, exhibits red, brown, and yellow colors due to iron impurities, and lacks visible crystal structure.
Formation & geological history
Forms from the deposition of silica-rich fluids in sedimentary environments or hydrothermal veins, often over millions of years.
Uses & applications
Widely used for ornamental objects, cabochons, jewelry, and polished decorative display pieces.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components by various civilizations globally.
Field identification & locations
Identify by its waxy luster, conchoidal fracture, and opaque banded or mottled earthy tones; commonly found in riverbeds and mountainous regions worldwide.
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