Tiger's Eye

Physical Properties

Hardness: 6.5-7 (Mohs); Color: Golden to red-brown with silky luster; Chatoyancy (cat's eye effect); Trigonal crystal system; SG: 2.64-2.71

Formation & Geological History

Formed through a pseudomorphic process where silica (quartz) replaces fibrous crocidolite (blue asbestos) filaments, typically in metamorphic environments through iron oxidation.

Uses & Applications

Commonly used in jewelry (cabochons, beads), decorative carvings, meditation stones, and as a popular specimen for mineral collectors.

Geological Facts

The unique 'chatoyancy' is caused by the reflection of light off the parallel mineral fibers. While it starts as blue crocidolite, the iron oxidation during replacement gives it the golden-brown color.

Field Identification & Locations

Identify by its distinctive silky, golden-brown bands that seem to shift when the stone is tilted. Primarily found in South Africa, Western Australia, USA, and Myanmar.

Identified on: 4/16/2026

Mode: Standard