sedimentary
Elephant Skin Jasper
Microcrystalline Quartz (SiO2)
Hardness of 6.5 to 7 on the Mohs scale, distinct patterned appearance with dark reddish-brown and white/cream coloration, vitreous to dull luster, cryptocrystalline structure with conchoidal fracture, specific gravity of 2.58 to 2.91.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, distinct patterned appearance with dark reddish-brown and white/cream coloration, vitreous to dull luster, cryptocrystalline structure with conchoidal fracture, specific gravity of 2.58 to 2.91.
Formation & geological history
Formed through the deposition of silica-rich solutions in sedimentary environments or hydrothermal veins, where silica gradually replaces organic material or fills cavities over millions of years during the Paleozoic to Cenozoic eras.
Uses & applications
Commonly used in lapidary arts, cabochons, decorative ornaments, gemstone jewelry, and collected by rockhounds.
Geological facts
Often referred to as elephant skin jasper due to its unique wrinkled and patterned exterior resembling the texture of an elephant's hide.
Field identification & locations
Easily identified by its distinctive red and white contrasting patterns and high hardness; found in various locations globally including Africa, India, and parts of the United States.
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