Item No : 835942 Gemstone Type : Natural Unheated AAA Quality White Moonstone Approx. Weight (ct) : 15.85 Ct. Shape: Oval Cabochan Size/Dimension : 18 x 13 MM Color : White Clarity : Translucent Luster : Good Origin : Srilanka Hardness : 6 Specific Gravity : 2.64 - 2.68 Refractive Index : 1.533 - 1.552 Chemical Composition : KAlSi3O8 Treatment : Natural