gemstone

Polished tiger’s eye

Tiger’s eye, a chatoyant variety of quartz (SiO₂) with fibrous crocidolite-derived inclusions

AI-generated identification · may be incorrect

Mohs hardness 6.5–7; golden-brown bands with silky luster and moving, reflective chatoyancy; trigonal quartz structure, no cleavage. The pictured specimen is polished and shaped.

Identified September 25, 2026More gemstone →

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Physical properties

Mohs hardness 6.5–7; golden-brown bands with silky luster and moving, reflective chatoyancy; trigonal quartz structure, no cleavage. The pictured specimen is polished and shaped.

Formation & geological history

Forms when silica replaces fibrous crocidolite in iron-rich rocks, preserving its structure; its age depends on the host deposit. Major deposits occur in South Africa, Australia, India, and Namibia.

Uses & applications

Used for cabochons, beads, carvings, and decorative objects; not generally used in construction.

Geological facts

Its bright, shifting band of reflected light is called chatoyancy, from the French for “cat’s eye.”

Field identification & locations

Identify by golden-brown parallel bands and a luminous stripe that shifts as the stone is tilted; distinguish it from dyed imitations by its natural, irregular banding. Small polished pieces commonly sell for about $5–$30 USD.