Rock Identifier
Tiger's Eye (Silicon dioxide with crocidolite pseudomorph (SiO2)) — gemstone
gemstone

Tiger's Eye

Silicon dioxide with crocidolite pseudomorph (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, golden-brown to yellow-blue color, silky luster, and a microcrystalline quartz crystal structure.

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Physical properties

Hardness of 7 on the Mohs scale, golden-brown to yellow-blue color, silky luster, and a microcrystalline quartz crystal structure.

Formation & geological history

Formed through the replacement of fibrous crocidolite by silica during regional metamorphism.

Uses & applications

Primarily used in making cabochons, beads, ornamental carvings, and low-cost jewelry.

Geological facts

It exhibits a distinct chatoyant optical effect resembling the eye of a tiger or cat.

Field identification & locations

Identify by its unique golden fibrous bands and silky shimmer; commonly mined in South Africa and Western Australia.