Red Tiger's Eye
Pseudomorph of Macrocrystalline Quartz after Crocidolite (SiO2)
Rock Type: metamorphic

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
Mode: Standard