Mineral (Metamorphic pseudomorph)

Tiger's Eye (Polished Point/Tower)

SiO2 (Silicon Dioxide) with included crocidolite fibers

AI-generated identification · may be incorrect

Hardness: 6.5–7 on the Mohs scale. Color: Golden brown, earthy yellow, and dark brown. Luster: Vitreous to silky. Structure: Trigonal (fibrous texture). Cleavage: None. Specific Gravity: 2.64–2.71.

Hardness: 6
Color: Golden brown, earthy yellow, and dark brown
Luster: Vitreous to silky

Identified March 29, 2026More mineral (metamorphic pseudomorph) →

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Physical properties

Formation & geological history

Formed through the pseudomorphism of crocidolite (blue asbestos) into quartz. As quartz replaces the fibers, the original fibrous structure is preserved, creating chatoyancy. They are primarily found in metamorphic iron formations, with some deposits dating back over 2 billion years.

Uses & applications

Predominantly used for lapidary work, jewelry (cabochons and beads), ornamental carvings, and 'holistic' or meditation tools (crystal towers). It is also a popular collector's mineral.

Geological facts

Tiger’s Eye displays a unique optical effect known as chatoyancy, caused by light reflecting off the parallel fibers within the stone. If the transition process is incomplete, it forms a blue version known as Hawk's Eye.

Field identification & locations

Identify by its 'shifting' light bands (chatoyancy) when tilted under focused light. Common locations include South Africa (Northern Cape), Australia, Myanmar, India, and Namibia. Collectors look for high luster and sharp, distinct golden bands.