microcrystalline quartz
Jasper
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of red, brown, or yellow, with a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of red, brown, or yellow, with a conchoidal fracture.
Formation & geological history
Formed through the silification of rich clay or sediment, often precipitating from silica-rich hydrothermal fluids in volcanic environments.
Uses & applications
Used primarily in ornamental carving, cabochons, jewelry, and as a decorative lapidary stone.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components by civilizations worldwide.
Field identification & locations
Identified by its opaque nature, waxy luster, and inability to be scratched by a steel knife; commonly found in riverbeds and sedimentary deposits globally.
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