gemstone
Carnelian Agate
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy luster, orange to reddish-brown color, and cryptocrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy luster, orange to reddish-brown color, and cryptocrystalline structure.
Formation & geological history
Forms by the deposition of silica from groundwater in cavities of igneous and sedimentary rocks over millions of years.
Uses & applications
Widely used in ornamental carvings, jewelry, and bead-making since antiquity.
Geological facts
Ancient Egyptians associated carnelian with the afterlife and frequently placed amulets of it in tombs.
Field identification & locations
Easily identified by its translucent orange-red hues and distinct waxy luster; found globally including Brazil, India, and the USA.
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