gemstone
Carnelian Agate
Silicon Dioxide (Chalcedony variety), SiO2
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7. Color ranges from orange to reddish-brown with distinct white banding. Exhibits a waxy to vitreous luster with a trigonal crystal system.
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Physical properties
Mohs hardness of 6.5 to 7. Color ranges from orange to reddish-brown with distinct white banding. Exhibits a waxy to vitreous luster with a trigonal crystal system.
Formation & geological history
Forms by the deposition of silica from groundwater in cavities of igneous and metamorphic rocks, occurring widely in volcanic regions worldwide.
Uses & applications
Primarily used in jewelry, cabochons, beads, and decorative carvings due to its vibrant polish.
Geological facts
Carnelian was highly valued in ancient Egypt as a stone of courage and used in royal signet rings.
Field identification & locations
Identified by its waxy luster, conchoidal fracture, and characteristic orange-red banding; commonly found in river gravels and volcanic deposits.
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