Red Tiger's Eye

Physical Properties

Hardness: 6.5-7 (Mohs); Color: Reddish-brown with light to dark red bands; Luster: Silky; Crystal structure: Trigonal; Cleavage: None; Chatoyancy (cat's eye effect) present.

Formation & Geological History

Formed through the hydrothermal alteration of blue crocidolite asbestos fibers into quartz. The red color is typically the result of natural or artificial heating, which oxidizes the iron (limonite) into hematite.

Uses & Applications

Primarily used as a gemstone for jewelry (cabochons, beads), decorative carvings, and as a popular specimen for crystal and mineral collectors.

Geological Facts

Red Tiger's Eye is also known as Bull's Eye or Ox Eye. While some occurs naturally due to geothermal heat, a large portion of the commercial market is created by gently heat-treating golden tiger's eye.

Field Identification & Locations

Identify in the field by its distinctive chatoyant luster and silky fibrous appearance. It is commonly found in South Africa, Australia, Burma, and India. It is opaque and will display a moving light band when rotated.

Identified on: 4/13/2026

Mode: Standard