gemstone
Tiger's Eye
Quartz pseudomorph after crocidolite (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, golden-brown to brown color, silky luster, and a fibrous crystal structure displaying chatoyancy.
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Physical properties
Hardness of 7 on the Mohs scale, golden-brown to brown color, silky luster, and a fibrous crystal structure displaying chatoyancy.
Formation & geological history
Forms when quartz replaces the original fibrous mineral crocidolite during low-grade metamorphism, occurring extensively in South Africa and Western Australia.
Uses & applications
Widely used for cabochons, beads, ornamental carvings, and holistic jewelry.
Geological facts
The characteristic cat's-eye effect is caused by parallel intergrown quartz crystals and altered amphibole fibres.
Field identification & locations
Easily identified by its distinctive golden banding and sliding light reflection; commonly sourced globally in lapidary shops.
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