Item No : 6198104 Gemstone Type : Natural Red Star Ruby Approx. Weight (ct) : 2.85 Ct. Shape : Oval Cabochan Size/Dimension : 7 x 6 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 : Unheated Quantity : 1 Pc (s)