sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Hardness of 6.5-7 on the Mohs scale. Brick-red to deep reddish-brown color due to hematite inclusions. Waxy to dull luster, microcrystalline/trigonal structure, conchoidal fracture, and no cleavage.
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Physical properties
Hardness of 6.5-7 on the Mohs scale. Brick-red to deep reddish-brown color due to hematite inclusions. Waxy to dull luster, microcrystalline/trigonal structure, conchoidal fracture, and no cleavage.
Formation & geological history
Formed when fine microcrystalline silica precipitates in volcanic ash or sedimentary environments along with rich iron oxide minerals, which impart the characteristic red color.
Uses & applications
Widely used for lapidary work, cabochons, decorative carvings, tumbling, polished beads, and metaphysical collection.
Geological facts
Red Jasper has been used since ancient times for amulets, seals, and ornamental objects. In antiquity, it was believed to bring protection, vitality, and courage to warriors.
Field identification & locations
Identified by its distinctive deep red color, opaque transparency, microcrystalline chert-like texture, and smooth conchoidal fracture. Commonly found in stream beds, gravel deposits, and volcanic regions worldwide.
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