gemstone
Carnelian Agate
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, reddish-orange to brown color, vitreous to waxy luster, and microcrystalline trigonal crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, reddish-orange to brown color, vitreous to waxy luster, and microcrystalline trigonal crystal structure.
Formation & geological history
Formed in cavities of volcanic and metamorphic rocks through the rhythmic deposition of silica-rich groundwater solutions over millions of years.
Uses & applications
Widely used in ornamental carvings, polished gemstones, jewelry making, and lapidary collections.
Geological facts
Carnelian was highly prized in ancient civilizations like Egypt and Rome for signet rings and protective amulets.
Field identification & locations
Identified by its distinctive translucent orange-red color and conchoidal fracture; commonly found in river gravels and volcanic deposits worldwide.
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