Optical Properties of Scapolite 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. Scapolite optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.
Scapolite luster is the quantity of light the crystal reflects when light is incident on it. Scapolite which is commonly found in Violet, White, gray, Brown, pink, Yellow color, is Gemmological Tables (2004) More from other references in nature.