Tiger's Eye

Physical Properties

Hardness: 6.5–7 (Mohs); Color: Golden to red-brown; Luster: Silky; Crystal system: Trigonal/Hexagonal; Cleavage: None; Specific Gravity: 2.64–2.71. Known for its distinct chatoyancy (cat's eye effect).

Formation & Geological History

Formed when quartz replaces the mineral crocidolite (blue asbestos) through a process called pseudomorphism, retaining the fibrous structure. Primarily formed in Precambrian aged banded iron formations.

Uses & Applications

Extensively used as a gemstone for jewelry (cabochons, beads), decorative carvings, and as a popular specimen for gemstone collectors and metaphysical enthusiasts.

Geological Facts

The 'chatoyant' shimmer is caused by the reflection of light off the parallel fibers within the stone. When the iron content is less oxidized, it can remain blue, known as Hawk's Eye.

Field Identification & Locations

Identify by its shifting bands of light (chatoyancy) when rotated. Commonly found in South Africa (Northern Cape province), Australia, India, and Myanmar (Burma).

Identified on: 4/24/2026

Mode: Standard