Item No : 895148 Gemstone Type : Natural Blue Rainbow Moonstone Approx. Weight (ct) : 5.15 Ct. Shape : Oval Cabochan Size/Dimension : 13 x 10 MM Color : Blue / White Clarity : Translucent Luster : Good Origin : Srilanka Hardness : 6 Specific Gravity : 2.64 - 2.68 Refractive Index : 1.533 - 1.552 Chemical Composition : KAlSi308 Treatment : Natural