sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of color, and a cryptocrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of color, and a cryptocrystalline structure.
Formation & geological history
Formed from silica-rich solutions precipitating in sedimentary environments or hydrothermal veins over millions of years.
Uses & applications
Commonly used for ornamental carvings, cabochons, jewelry, and lapidary collecting.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative ornamentation across many cultures.
Field identification & locations
Identified by its opaque nature, smooth conchoidal fracture, and rich color patterns; found worldwide in riverbeds and mountainous regions.
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