sedimentary
Red Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque 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 red to brownish-red color, vitreous to dull luster, and conchoidal fracture.
Formation & geological history
Formed through the hydrothermal alteration or precipitation of silica-rich fluids in sedimentary or volcanic environments over millions of years.
Uses & applications
Widely used for making ornamental objects, carved figurines, cabochons, and as a popular tumbled stone for collectors.
Geological facts
Red jasper is colored primarily by iron oxide inclusions and has been utilized since ancient times for amulets and seals.
Field identification & locations
Identified by its deep red color, lack of cleavage, and high hardness that scratches glass. Found worldwide in regions with significant hydrothermal activity.
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