Item No : 5232521 Gemstone Type : Natural Red Star Ruby Approx. Weight (ct) : 3.65 Ct. Shape : Oval Cabochan Size/Dimension : 8 x 7 MM Color : Red Clarity : Opaque Luster : Good Origin : India Hardness : 9 Specific Gravity : 3.9 - 4.1 Refractive Index : 1.76 - 1.78 Chemical Composition : Al2O3 Treatment : Natural Quantity : 1 Pc (s)