Rock Identifier
Carnelian Agate (Silicon dioxide with iron oxide impurities (SiO2)) — gemstone
gemstone

Carnelian Agate

Silicon dioxide with iron oxide impurities (SiO2)

AI-generated identification · may be incorrect

Hardness of 6.5 to 7 on the Mohs scale, orange to reddish-brown color, waxy to vitreous luster, and cryptocrystalline structure.

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Physical properties

Hardness of 6.5 to 7 on the Mohs scale, orange to reddish-brown color, waxy to vitreous luster, and cryptocrystalline structure.

Formation & geological history

Formed through the deposition of silica from groundwater in cavities of igneous and sedimentary rocks over millions of years.

Uses & applications

Widely used in making jewelry, talismans, and ornamental carvings due to its vibrant color and polishability.

Geological facts

Historically prized in ancient Rome and Egypt as a powerful protective amulet and stone of courage.

Field identification & locations

Easily identified by its translucent banding and warm reddish-orange hues; found globally, notably in Brazil and India.