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