Rock Identifier
Tiger's Eye (Silicon dioxide with crocidolite inclusions (SiO2)) — gemstone
gemstone

Tiger's Eye

Silicon dioxide with crocidolite inclusions (SiO2)

AI-generated identification · may be incorrect

Mohs hardness of 7, golden-brown to yellow-brown color, silky to vitreous luster, hexagonal crystal system, and distinct chatoyancy (cat's eye effect).

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Physical properties

Mohs hardness of 7, golden-brown to yellow-brown color, silky to vitreous luster, hexagonal crystal system, and distinct chatoyancy (cat's eye effect).

Formation & geological history

Formed when quartz pseudomorphs after crocidolite asbestos, typically occurring in ancient metamorphic environments.

Uses & applications

Widely used in jewelry, beads, ornamental carvings, and holistic wellness practices.

Geological facts

Tiger's eye is a metamorphic rock that starts as the blue mineral crocidolite before being completely replaced by quartz while retaining its fibrous structure.

Field identification & locations

Identified by its signature moving band of light (chatoyancy) and warm golden hues. Major deposits are found in South Africa and Australia.