Pyrite Luster
Optical Properties of Pyrite 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. Pyrite optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.
Pyrite luster is the quantity of light the crystal reflects when light is incident on it. Pyrite which is commonly found in Yellow color, is OpaqueHerve Nicolas Lazzarelli and Blue Chart Gem Identification (2010) More from other references in nature.