sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness 6.5-7 on Mohs scale; opaque; vitreous to dull luster; trigonal crystal system; conchoidal fracture.
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Physical properties
Hardness 6.5-7 on Mohs scale; opaque; vitreous to dull luster; trigonal crystal system; conchoidal fracture.
Formation & geological history
Formed from silica-rich fluids precipitating in sedimentary environments or hydrothermal veins over millions of years.
Uses & applications
Used primarily for ornamental carvings, cabochons, jewelry, and lapidary collection.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components like arrowheads.
Field identification & locations
Identify by its opaque nature, smooth conchoidal fracture, and rich color patterns; found worldwide in riverbeds and mountainous regions.
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