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