Tiger's eye
(ti'-garz-i')
16th c.; w-sax eage; ind-eur oqw; lat. tigris; pers. tighra
Yellow-brown, semiprecious chatoyant gemstone consisting of quartz with parallel veins of silicified altered crocidolite
Color
Brownish yellow to reddish brown
Chemical composition
SiO2
Specific gravity
2,66 ±0,20
Refractive index
1,544 - 1,553
Optical character
Uniaxial +