mineral
Tiger's Eye
Silicon dioxide with crocidolite inclusions (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, golden-brown to brownish-black color, silky luster, hexagonal crystal system, and distinct chatoyant or cat's-eye optical effect.
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Physical properties
Hardness of 7 on the Mohs scale, golden-brown to brownish-black color, silky luster, hexagonal crystal system, and distinct chatoyant or cat's-eye optical effect.
Formation & geological history
Formed as a pseudomorph when quartz replaces the fibrous mineral crocidolite, typically occurring in Precambrian banded iron formations.
Uses & applications
Widely utilized in jewelry making, ornamental carvings, and as a popular collectible gemstone.
Geological facts
The characteristic shimmering effect is caused by parallel intergrowths of quartz crystals and altered amphibole fibers.
Field identification & locations
Easily identified by its distinctive golden silk-like bands and chatoyancy; commonly sourced from South Africa, Australia, and the USA.
