sedimentary
Jasper
Microcrystalline quartz, SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, variable colors including red, brown, green, and yellow with conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, variable colors including red, brown, green, and yellow with conchoidal fracture.
Formation & geological history
Formed from silica-rich solutions precipitating in sedimentary environments or hydrothermal veins, often associated with volcanic activity.
Uses & applications
Used primarily for ornamental carvings, polished cabochons in jewelry, and decorative stone objects.
Geological facts
Ancient civilizations valued jasper for talismans and seals due to its durability and rich color patterns.
Field identification & locations
Identified by its waxy luster, opaque nature, and hardness that scratches glass; commonly found in riverbeds and mountainous regions.
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