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 a microcrystalline or cryptocrystalline crystal structure with no cleavage.
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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 a microcrystalline or cryptocrystalline crystal structure with no cleavage.
Formation & geological history
Formed through the silification of sedimentary deposits or volcanic ash, where silica-rich fluids replace organic material or fill cavities over millions of years.
Uses & applications
Commonly used in ornamental carvings, polished stones, jewelry, and lapidary art.
Geological facts
Red jasper has been used since ancient times for amulets, seals, and weaponry, often associated with strength and endurance.
Field identification & locations
Easily identified by its deep red color, smooth waxy polish, and high hardness that scratches glass. Found worldwide, particularly in India, Brazil, Russia, and the USA.
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