sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, opaque red to reddish-brown color, waxy to vitreous luster, and conchoidal fracture.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque red to reddish-brown color, waxy to vitreous luster, and conchoidal fracture.
Formation & geological history
Forms through the deposition of silica-rich fluids in sedimentary environments or hydrothermal veins, often colored by iron oxide inclusions.
Uses & applications
Widely used for tumbled stones, cabochons in jewelry, ornamental carvings, and lapidary collections.
Geological facts
Red jasper was historically used by ancient civilizations like the Egyptians and Romans to create protective amulets and seals.
Field identification & locations
Easily identified by its deep red, opaque appearance and hardness that easily scratches glass. Found worldwide, especially in India, Brazil, and the USA.
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