Crystal Tiger Eye

Chemical Formula	SiO2
Color	Yellow, Brown, Multicolored
Hardness	7
Crystal System	Hexagonal
Refractive Index	1.54 - 1.55
SG	2.63 - 2.65
Transparency	Opaque
Double Refraction	None
Luster	Silky
Cleavage	Indiscernible
Mineral Class	Quartz (Chalcedony)