Cryolite Luster
Optical Properties of Cryolite are its behavioral responses towards light. While few optical properties can be identified with naked eyes, other require special instruments by the gemologists to identify them. Cryolite optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.
Cryolite luster is the quantity of light the crystal reflects when light is incident on it. Cryolite which is commonly found in Colorless, White, Brownish, Reddish, Black, Brownish, Black, Colorless, gray, White, Reddish, Brown color, is Gemmological Tables (2004) More from other references in nature. It possess Greasy, Pearly and Vitreous luster.