metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7.0 (Mohs); Color: Golden to red-brown; Luster: Silky; Crystal structure: Trigonal (fibrous aggregate); Cleavage: None; Specific gravity: 2.64-2.71

Hardness: 6
Color: Golden to red-brown
Luster: Silky

Identified May 2, 2026More metamorphic →

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Physical properties

Hardness: 6.5-7.0 (Mohs); Color: Golden to red-brown; Luster: Silky; Crystal structure: Trigonal (fibrous aggregate); Cleavage: None; Specific gravity: 2.64-2.71

Formation & geological history

Formed through the replacement of fibrous blue crocidolite asbestos by silica (quartz), a process called pseudomorphism, usually in iron-rich metamorphic rocks.

Uses & applications

Primarily used in jewelry, lapidary arts (cabochons and beads), carvings, and as a popular collector's stone or metaphysical tool.

Geological facts

Tiger's eye exhibits a unique optical effect known as chatoyancy, where reflected light creates a moving silky band due to the preserved fibrous structure of the original crocidolite crystals.

Field identification & locations

Identify in the field by its distinct chatoyant bands and golden-yellow color. Major deposits are found in South Africa, Australia, India, and Namibia.