sedimentary
Jasper
Silicon dioxide (Microcrystalline Quartz)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of color, and cryptocrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of color, and cryptocrystalline structure.
Formation & geological history
Formed from silica-rich fluids precipitating in sedimentary environments or volcanic fissures over millions of years.
Uses & applications
Used widely in ornamental carvings, cabochons, jewelry, and polished collector specimens.
Geological facts
Jasper has been used since ancient times for talismans, seals, and decorative weaponry by various early civilizations.
Field identification & locations
Identified by its opaque appearance, waxy luster, and resistance to scratching by a steel blade. Commonly found in riverbeds and mountainous regions.
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