sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
Hardness of 6.5 to 7 on the Mohs scale, red to reddish-brown color due to iron oxide inclusions, waxy to dull luster, cryptocrystalline crystal structure, conchoidal fracture with no cleavage, specific gravity of 2.58 to 2.91.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, red to reddish-brown color due to iron oxide inclusions, waxy to dull luster, cryptocrystalline crystal structure, conchoidal fracture with no cleavage, specific gravity of 2.58 to 2.91.
Formation & geological history
Formed through the chemical precipitation of silica in silica-rich waters, often within marine environments or hot springs, combined with iron oxide impurities during diagenesis.
Uses & applications
Commonly used for making cabochons, beads, ornamental carvings, polished stones, and as a collector's mineral specimen.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry, mentioned in various historical texts as a sacred and protective stone.
Field identification & locations
Easily identified by its opaque red color, hardness that scratches glass, and smooth waxy polish. Found worldwide, with significant deposits in India, Brazil, Russia, and the USA.
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