mineral
Tiger's Eye (Brown/Golden)
Silicon dioxide (Quartz pseudomorph after crocidolite), SiO2
Mohs hardness of 7; Color ranges from golden-brown to brown; Silky to vitreous luster; Trigonal crystal system (pseudomorphous after monoclinic riebeckite); Indistinct cleavage; Specific gravity of 2.64-2.71
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Physical properties
Mohs hardness of 7; Color ranges from golden-brown to brown; Silky to vitreous luster; Trigonal crystal system (pseudomorphous after monoclinic riebeckite); Indistinct cleavage; Specific gravity of 2.64-2.71
Formation & geological history
Formed when quartz constantly replaces the mineral crocidolite as it alters, preserving the fibrous structure. Found in metamorphic rocks and hydrothermal veins.
Uses & applications
Used primarily for ornamental objects, cabochons, beads in jewelry, and metaphysical practices.
Geological facts
Tiger's eye is a chatoyant gemstone known for its distinct shimmering light effect, resembling the eye of a tiger or cat.
Field identification & locations
Easily identified by its golden-brown color and distinctive moving band of light (chatoyancy) when turned in the light. Major deposits are found in South Africa, Western Australia, and the USA.
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