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