sedimentary
Red Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque deep red to brownish-red color, vitreous to dull luster, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque deep red to brownish-red color, vitreous to dull luster, and conchoidal fracture.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids or precipitation of silica in marine environments, often dating back to the Precambrian era.
Uses & applications
Widely used for ornamental carvings, polished cabochons in jewelry, and as a popular specimen for rock collectors.
Geological facts
Red jasper has been used since ancient times for talismans and seals, and its red color is primarily due to iron oxide inclusions.
Field identification & locations
Easily identified by its deep red color, waxy luster, and lack of visible crystal structure. Commonly found globally in association with iron ore deposits.
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