gemstone
Carnelian Agate
Silicon Dioxide (Chalcedony variety), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy luster, translucent to opaque, and colors ranging from orange to red-brown.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy luster, translucent to opaque, and colors ranging from orange to red-brown.
Formation & geological history
Formed through the deposition of silica-rich groundwater within cavities of volcanic or sedimentary rocks over millions of years.
Uses & applications
Widely used in jewelry making, ornamental carvings, and as a popular collector's mineral specimen.
Geological facts
Carnelian was historically prized by ancient Egyptians, Greeks, and Romans for use in signet rings and amulets.
Field identification & locations
Identified by its distinctive waxy luster, conchoidal fracture, and warm translucent red-orange coloration; commonly found in river gravels and volcanic regions worldwide.
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