gemstone

Tiger’s-eye (likely cabochon gemstone)

Quartz variety, chiefly SiO₂, with fibrous crocidolite-derived inclusions

AI-generated identification · may be incorrect

Golden-brown, polished and strongly chatoyant; Mohs hardness 6.5–7, vitreous-to-silky luster, trigonal quartz structure, no distinct cleavage. The image shows a small, rounded polished piece; exact identification is uncertain from the photograph.

Identified October 12, 2026More gemstone →

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Physical properties

Formation & geological history

Forms when silica replaces blue asbestos (crocidolite) fibers, preserving their structure and producing a moving band of reflected light. Deposits are commonly associated with ancient iron-rich formations, especially those of South Africa; precise age depends on the deposit.

Uses & applications

Used for cabochons, beads, carvings, and ornamental objects; also collected as a decorative gemstone.

Geological facts

Its shifting, eye-like bright band is called chatoyancy and is best seen when the stone is cut and polished parallel to its fibrous structure.

Field identification & locations

Look for golden-brown bands and a bright line that moves as the stone or light shifts; common sources include South Africa, Australia, and India. Confirming the material would require closer inspection, as the photo alone cannot rule out a non-geological object.