gemstone
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
AI-generated identification · may be incorrectHardness 6.5–7 Mohs; golden-yellow to brown; silky to vitreous luster; trigonal crystal system; distinct chatoyancy (cat's-eye effect).
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Physical properties
Hardness 6.5–7 Mohs; golden-yellow to brown; silky to vitreous luster; trigonal crystal system; distinct chatoyancy (cat's-eye effect).
Formation & geological history
Formed via epithermal silicification when fibrous crocidolite asbestos is altered into quartz while preserving fibrous structure and iron oxides.
Uses & applications
Widely used for cabochons, beads, carved figurines, and decorative lapidary jewelry.
Geological facts
Roman soldiers historically carried tiger's eye for protection and courage in battle, believing it granted omnipresent vision.
Field identification & locations
Identified by shifting reflective bands of golden-brown shimmer upon tilting; prominent deposits are found in South Africa and Western Australia.
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