sedimentary
Red Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, red to reddish-brown color due to iron inclusions, waxy luster, and opaque transparency with no visible crystal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, red to reddish-brown color due to iron inclusions, waxy luster, and opaque transparency with no visible crystal structure.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids or precipitation in marine environments, often dating back to the Precambrian era.
Uses & applications
Commonly used for lapidary work, decorative carvings, cabochons, and as a low-cost gemstone in jewelry.
Geological facts
Red jasper was historically used by ancient civilizations to carve protective amulets and talismans, and it often contains traces of hematite.
Field identification & locations
Easily identified by its deep red color, conchoidal fracture, and inability to be scratched by a steel knife; found worldwide in riverbeds and mountainous regions.
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