Tiger's Eye

The eye of Tiger is a fibrous quartz. The chatoyance is caused by numerous parallel inclusions of crocidolite.

Color: yellow, dark yellow and brown even golden Orange
Hardness: 7
Refractive index: 1,53 - 1,55
Density: 2,58 - 2,66
Chemical Composition: SiO2 (dioxide of silicon)
Crystalline Structure: trigonal
Luster: glassy
Origin: South Africa, Australia, Mexico, Sri Lanka, Austria, Namibia, India, Burma, Brazil (Minas Gerais) etc.

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