mineral
Red Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
Hardness of 6.5 to 7 on the Mohs scale, opaque luster (waxy to dull), brick-red to brownish-red color due to iron inclusions, trigonal crystal system with a compact microcrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster (waxy to dull), brick-red to brownish-red color due to iron inclusions, trigonal crystal system with a compact microcrystalline structure.
Formation & geological history
Formed through the hydrothermal deposition of silica-rich fluids or precipitation in silica-rich marine environments, often associated with iron formations, dating across various geological eras.
Uses & applications
Commonly used in lapidary work, making cabochons, beads, decorative carvings, and ornamental jewelry, as well as valued by collectors.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry. The red variety derives its color primarily from hematite or clay impurities trapped during formation.
Field identification & locations
Easily identified by its deep red color, conchoidal fracture, and high hardness which scratches glass. Found worldwide, particularly in India, Brazil, Russia, and parts of the United States.
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