mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Hardness: 6.5-7 Mohs; Color: Golden-brown to yellow with chatoyant bands; Luster: Silky; Crystal structure: Trigonal/Fibrous; Specific Gravity: 2.64-2.71

Hardness: 6
Color: Golden-brown to yellow with chatoyant bands
Luster: Silky

Identified June 2, 2026More mineral →

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Physical properties

Hardness: 6.5-7 Mohs; Color: Golden-brown to yellow with chatoyant bands; Luster: Silky; Crystal structure: Trigonal/Fibrous; Specific Gravity: 2.64-2.71

Formation & geological history

Formed through the replacement of fibrous crocidolite (asbestos) by silica (quartz) while maintaining the original fibrous structure. It typically forms in metamorphic rock environments.

Uses & applications

Primarily used in jewelry (cabochons, beads), decorative carvings, and as a popular collectible gemstone for its unique optical effect.

Geological facts

Tiger's Eye exhibits an optical phenomenon known as chatoyancy, which creates a 'cat's eye' effect when light reflects off the fibrous inclusions. It is considered a metamorphic 'pseudomorph'.

Field identification & locations

Identify by rotating the stone under light to observe the shimmering, moving bands. It is most commonly found in South Africa, Australia, and India. Small tumbled stones are very common in gift shops.

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