metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 Mohs; Color: Golden-brown to reddish-brown with chatoyant bands; Luster: Silky; Crystal structure: Trigonal/Fibrous; Cleavage: None; Specific gravity: 2.64-2.71

Hardness: 7 Mohs
Color: Golden-brown to reddish-brown with chatoyant bands
Luster: Silky

Identified June 27, 2026More metamorphic →

Explore Tiger's Eye in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 7 Mohs; Color: Golden-brown to reddish-brown with chatoyant bands; Luster: Silky; Crystal structure: Trigonal/Fibrous; Cleavage: None; Specific gravity: 2.64-2.71

Formation & geological history

Formed through the pseudomorphism of crocidolite asbestos by silica. Iron oxides provide the characteristic golden-brown color. Found predominantly in Precambrian iron formations.

Uses & applications

Extensively used in jewelry (cabochons, beads), decorative carvings, and as a popular stone for collectors and metaphysical practitioners.

Geological facts

The 'chatoyancy' or cat-eye effect is caused by the reflection of light off the parallel mineral fibers within the stone. When cut into cabochons, it appears to shift as it moves.

Field identification & locations

Identify by its unique silky banding and the way light moves across the surface. Major deposits are found in South Africa (Griualand West) and Western Australia.