gemstone
Carnelian Agate
Silicon Dioxide (Chalcedony variety)
AI-generated identification · may be incorrectHardness 6.5-7 on Mohs scale; orange to reddish-brown color; waxy to vitreous luster; microcrystalline quartz structure with no cleavage.
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Physical properties
Hardness 6.5-7 on Mohs scale; orange to reddish-brown color; waxy to vitreous luster; microcrystalline quartz structure with no cleavage.
Formation & geological history
Forms by the deposition of silica from groundwater in cavities of rocks, predominantly volcanic lavas, over millions of years.
Uses & applications
Used extensively in jewelry, talisman crafting, and ornamental carvings.
Geological facts
Carnelian was highly prized by ancient Egyptians, who wore it as an amulet to ensure safe passage to the afterlife.
Field identification & locations
Identified by its translucent orange hue and distinct curved banding patterns; commonly found in Brazil, India, and Madagascar.
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