Nepheline Luster
Optical Properties of Nepheline 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. Nepheline optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.
Nepheline luster is the quantity of light the crystal reflects when light is incident on it. Nepheline which is commonly found in White, Reddish, gray, Brown, Brownish color, is Translucent and Transparent in nature. It possess Greasy and Vitreous luster.