mineral
Red Jasper
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque red to reddish-brown color with a microcrystalline structure, and a vitreous to dull luster.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque red to reddish-brown color with a microcrystalline structure, and a vitreous to dull luster.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids or chemical precipitation in marine environments, often dating back over a billion years.
Uses & applications
Commonly used for making decorative objects, cabochons for jewelry, small sculptures, and collected by mineral enthusiasts.
Geological facts
Red jasper has been used since ancient times for talismans and signet rings. Its vibrant red hue is caused by iron oxide inclusions within the microcrystalline quartz matrix.
Field identification & locations
Identified by its conchoidal fracture, lack of cleavage, high hardness, and distinctive earthy red color. It is globally distributed and frequently found in riverbeds and ancient alluvial deposits.
