sedimentary
Jasper
Microcrystalline Quartz (SiO2)
Hardness of 6.5-7 on the Mohs scale, opaque with a smooth fracture, vitreous to dull luster, and occurs in various colors including red, brown, yellow, and purple.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque with a smooth fracture, vitreous to dull luster, and occurs in various colors including red, brown, yellow, and purple.
Formation & geological history
Formed through the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often dating back hundreds of millions of years.
Uses & applications
Used in ornamental carvings, cabochons, jewelry, and as a collector's specimen.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative items due to its durability and attractive patterns.
Field identification & locations
Identify by its opaque nature, high hardness, and conchoidal fracture. Commonly found in riverbeds and mountainous regions worldwide.
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