sedimentary
Red Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness of 7, earthy to vitreous luster, opaque red to brownish-red color with microgranular crystal structure.
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Physical properties
Mohs hardness of 7, earthy to vitreous luster, opaque red to brownish-red color with microgranular crystal structure.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids or accumulation of silica on ocean floors, often dating back to the Precambrian era.
Uses & applications
Used in ornamental carvings, cabochons, lapidary arts, and gemstone collections.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its conchoidal fracture and durability.
Field identification & locations
Identified by its distinctive opaque red coloration and lack of cleavage; commonly found in hydrothermal veins and sedimentary iron formations worldwide.
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