sedimentary
Jasper
Silicon dioxide (Microcrystalline Quartz, SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, waxy to dull luster, and conchoidal fracture. Displays opaque yellow-brown coloration often with intricate banding or patterns.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, waxy to dull luster, and conchoidal fracture. Displays opaque yellow-brown coloration often with intricate banding or patterns.
Formation & geological history
Forms through the silica-rich precipitation in marine sediments or alteration of volcanic ash, often taking millions of years to harden.
Uses & applications
Used widely in ornamental carvings, cabochons, jewelry, and polished decorative display pieces.
Geological facts
Ancient civilizations prized jasper for talismans and amulets, often associating it with courage and strength.
Field identification & locations
Identified easily by its opaque, dense structure, lack of cleavage, and waxy finish; found globally in riverbeds and ancient hydrothermal deposits.
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