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

Tiger's Eye

Silicon dioxide with crocidolite inclusions (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, golden to dark brown color with chatoyant silky luster, microcrystalline quartz structure.

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Physical properties

Hardness of 7 on the Mohs scale, golden to dark brown color with chatoyant silky luster, microcrystalline quartz structure.

Formation & geological history

Formed when quartz pseudomorphs over fibrous crocidolite asbestos, typically in metamorphic environments through metasomatism.

Uses & applications

Used primarily in jewelry, ornamental carvings, and metaphysical applications.

Geological facts

The distinct chatoyancy or cat's-eye effect is caused by parallel inclusions of fibrous amphibole minerals.

Field identification & locations

Identified by its signature moving band of light and rich brown-gold banding; found globally, prominently in South Africa and Australia.