Red Tiger's Eye

Pseudomorph of Macrocrystalline Quartz after Crocidolite (SiO2)

Rock Type: metamorphic

Red Tiger's Eye

Physical Properties

Hardness: 6.5-7 (Mohs scale), Color: Reddish-brown with light shimmering bands, Luster: Silky/Vitreous, Crystal Structure: Hexagonal (Trigonal), Cleavage: None (conchoidal fracture), Specific Gravity: 2.64-2.71

Formation & Geological History

Formed through the pseudomorphism of crocidolite (asbestos) fibers by quartz. The red color is typically achieved through natural or artificial oxidation (heating) of the iron within basic golden Tiger's Eye, converting limonite to hematite.

Uses & Applications

Primarily used as a gemstone in jewelry (cabochons, beads, rings), as a decorative ornamental stone, and in metaphysical collection practices.

Geological Facts

Also known as Ox's Eye or Bull's Eye. It exhibits a optical effect known as chatoyancy, where light reflects off the fibrous inclusions to create a cat-eye shimmering effect. Most red tiger's eye on the market is created by gently heating golden tiger's eye.

Field Identification & Locations

Identify by its distinct silky luster and 'moving' bands of light when rotated. It is commonly found in South Africa, Australia, Brazil, and India. Collectors should look for even color distribution and strong chatoyancy.

Identified on: 4/28/2026

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