sedimentary
Jasper
Microcrystalline quartz (SiO2) with impurities
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones with distinctive banding, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones with distinctive banding, and conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic deposits, often precipitated from silica-rich hydrothermal fluids over millions of years.
Uses & applications
Used extensively for ornamental carvings, cabochons, polished decorative stones, and gemstone jewelry.
Geological facts
Ancient civilizations revered jasper for its protective spiritual properties and used it widely to carve talismans and seals.
Field identification & locations
Easily identified by its opaque appearance, colorful banding, and ability to scratch glass; commonly found in riverbeds and mountainous regions worldwide.
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