gemstone
Carnelian
Silicon Dioxide (Chalcedony variety)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, vibrant orange to red-brown color, waxy to vitreous luster, and microcrystalline crystal structure with conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, vibrant orange to red-brown color, waxy to vitreous luster, and microcrystalline crystal structure with conchoidal fracture.
Formation & geological history
Forms in low-temperature hydrothermal environments and cavities of volcanic or sedimentary rocks through the deposition of silica-rich solutions over millions of years.
Uses & applications
Widely used in jewelry such as beaded bracelets, rings, and carved into signet rings or intaglios due to its durability and rich color.
Geological facts
Ancient civilizations highly prized carnelian, often using it in royal signets and amulets, with notable archaeological finds in Minoan Crete and ancient Egypt.
Field identification & locations
Identified by its characteristic translucent orange-red hue and waxy luster; commonly sourced from India, Brazil, Uruguay, and Madagascar.
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