sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earthy colors including red, brown, and yellow, with a cryptocrystalline crystal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earthy colors including red, brown, and yellow, with a cryptocrystalline crystal structure.
Formation & geological history
Formed through the accumulation of silica-rich sediments or volcanic ash, typically deposited in marine environments over millions of years.
Uses & applications
Widely used for ornamental objects, cabochons, carved gemstones, and lapidary art due to its ability to take a high polish.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry, mentioned frequently in classical lapidary texts.
Field identification & locations
Identified easily by its waxy luster, conchoidal fracture, and opaque multicolor patterns; commonly found in riverbeds and mountainous regions worldwide.
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