sedimentary
Red Jasper
Silicon Dioxide (SiO2) with hematite impurities
AI-generated identification · may be incorrectMohs hardness of 6.5-7, opaque brick-red color, vitreous to dull waxy luster, and microcrystalline (trigonal) structure with conchoidal fracture.
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Physical properties
Mohs hardness of 6.5-7, opaque brick-red color, vitreous to dull waxy luster, and microcrystalline (trigonal) structure with conchoidal fracture.
Formation & geological history
Formed when silica-rich fluids permeate volcanic ash or sedimentary layers, absorbing oxidized iron (hematite) during precipitation.
Uses & applications
Commonly tumbled, carved into cabochons, or used in beads and lapidary art.
Geological facts
Historically revered as the 'Blood of the Earth' and utilized across ancient civilizations for protective talismans and seal stones.
Field identification & locations
Identified in the field by its hardness (scratches glass), complete opacity, and rich earthy red streak-less body; widely found in India, Brazil, and the USA.
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