Rock Identifier
Tiger’s-eye ring (Tiger’s-eye, a quartz-rich pseudomorph of fibrous crocidolite; SiO₂) — gemstone
gemstone

Tiger’s-eye ring

Tiger’s-eye, a quartz-rich pseudomorph of fibrous crocidolite; SiO₂

AI-generated identification · may be incorrect

Golden-brown banding and silky chatoyant luster in a cabochon cut; Mohs hardness about 7, trigonal quartz crystal structure, no prominent cleavage. The small surrounding stones and metal setting cannot be identified from the image.

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Physical properties

Golden-brown banding and silky chatoyant luster in a cabochon cut; Mohs hardness about 7, trigonal quartz crystal structure, no prominent cleavage. The small surrounding stones and metal setting cannot be identified from the image.

Formation & geological history

Forms when silica replaces fibrous crocidolite during alteration, preserving its structure and producing chatoyancy. Deposits occur in ancient, altered iron-rich rocks; the specimen’s exact age and provenance are unknown.

Uses & applications

Tiger’s-eye is used in jewelry and ornamental objects; this ring’s value depends on the stone, setting, craftsmanship, and condition.

Geological facts

Its shifting, eye-like band of reflected light is called chatoyancy.

Field identification & locations

Look for parallel golden-brown bands that seem to move as the stone is tilted; common sources include South Africa, Australia, and India.

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