Rock Identifier
Carnelian (Silicon Dioxide (SiO2)) — gemstone
gemstone

Carnelian

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, orange to reddish-brown color, vitreous to waxy luster, and microcrystalline trigonal structure.

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Physical properties

Hardness of 7 on the Mohs scale, orange to reddish-brown color, vitreous to waxy luster, and microcrystalline trigonal structure.

Formation & geological history

Forms in low-temperature hydrothermal environments and cavities of volcanic rocks through silica deposition in groundwater.

Uses & applications

Widely used in jewelry, signet rings, carvings, and metaphysical practices due to its attractive translucent orange tones.

Geological facts

Ancient civilizations prized carnelian for seals and amulets, often associating it with courage and vitality in burial offerings.

Field identification & locations

Identified by its distinctive orange-to-red hue and conchoidal fracture; commonly sourced from India, Brazil, and Uruguay.