Tiger's Eye

Physical Properties

Hardness: 7.0 (Mohs); Color: Golden yellow to brown with chatoyant stripes; Luster: Silky; Crystal structure: Trigonal (fibrous texture); Cleavage: None; Specific Gravity: 2.64-2.71

Formation & Geological History

Formed when quartz replaces fibrous crocidolite (blue asbestos) via a process of pseudomorphism, preserving the original fibrous structure. Found in iron formations and tectonic metamorphic environments.

Uses & Applications

Primarily used in jewelry (cabochons, beads), decorative carvings, ornaments, and as a popular semi-precious stone for collectors.

Geological Facts

The shimmering effect, known as chatoyancy, is caused by light reflecting off the internal fibers. It was historically worn by Roman soldiers in battle for protection and courage.

Field Identification & Locations

Identify by its distinctive silky luster and golden bands that appear to move when the stone is tilted. Common locations include South Africa, Australia, India, and the USA.

Identified on: 4/15/2026

Mode: Standard