Optical Properties of Almandine 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. Almandine optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.
Almandine luster is the quantity of light the crystal reflects when light is incident on it. Almandine which is commonly found in Red, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black color, is Gemmological Tables (2004) More from other references in nature. It possess Greasy and Vitreous luster.