Rock Identifier
Tiger's Eye (Silicon Dioxide (Quartz pseudomorph after crocidolite)) — mineral
mineral

Tiger's Eye

Silicon Dioxide (Quartz pseudomorph after crocidolite)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, golden-brown to yellowish-brown color, silky to vitreous luster, and hexagonal crystal system.

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Physical properties

Hardness of 7 on the Mohs scale, golden-brown to yellowish-brown color, silky to vitreous luster, and hexagonal crystal system.

Formation & geological history

Formed when quartz concurrently replaces the fibrous mineral crocidolite, preserving its fibrous structure over millions of years.

Uses & applications

Widely used for making polished gemstone beads, cabochons, decorative sculptures, and jewelry.

Geological facts

Tiger's eye exhibits chatoyancy, a distinct optical reflectance effect that creates a moving cat-eye stripe across the polished surface.

Field identification & locations

Easily identified by its golden-brown color bands and chatoyant light reflection; primarily sourced from South Africa and Western Australia.