Rock Identifier
Tiger's Eye (Silicon Dioxide with Crocidolite inclusions (SiO2)) — mineral
mineral

Tiger's Eye

Silicon Dioxide with Crocidolite inclusions (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale. Golden brown to yellow-brown color with a silky chatoyant luster. Crystal system is trigonal (microcrystalline quartz).

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Physical properties

Hardness of 7 on Mohs scale. Golden brown to yellow-brown color with a silky chatoyant luster. Crystal system is trigonal (microcrystalline quartz).

Formation & geological history

Formed as a pseudomorph of quartz replacing the original mineral crocidolite via hydrothermal alteration over millions of years.

Uses & applications

Used primarily in jewelry, cabochons, carvings, and ornamental stone objects.

Geological facts

The characteristic chatoyancy or cat-eye effect is caused by parallel intergrown quartz crystals and altered amphibole fibers.

Field identification & locations

Identified by its distinct golden stripes and silky reflection when moved in the light. Commonly found in South Africa and Western Australia.