mineral
Tiger's Eye
Silicon Dioxide with Crocidolite inclusions (SiO2)
Hardness of 7 on the Mohs scale, colors ranging from golden yellow to deep brownish-yellow with a silky luster and chatoyant effect. It has a hexagonal (trigonal) crystal system and a specific gravity of 2.64 to 2.71.
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Physical properties
Hardness of 7 on the Mohs scale, colors ranging from golden yellow to deep brownish-yellow with a silky luster and chatoyant effect. It has a hexagonal (trigonal) crystal system and a specific gravity of 2.64 to 2.71.
Formation & geological history
Formed as a pseudomorph of quartz replacing the original mineral crocidolite (blue asbestos) through hydrothermal alteration and oxidation processes over millions of years.
Uses & applications
Commonly used for making cabochons, beads, carved figurines, decorative items, and jewelry.
Geological facts
Tiger's eye is famous for its distinctive chatoyancy, which creates a moving band of light resembling the eye of a tiger. Historically, Roman soldiers wore it to protect them in battle.
Field identification & locations
Easily identified by its golden-brown stripes and distinctive cat's-eye sheen when polished or viewed in good lighting. Major deposits are found in South Africa, Western Australia, the USA, and India.
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