Item No : 4708585 Gemstone Type : Natural Unheated 6 Rays Red Ruby Star Oldmine Approx. Weight (ct) : 3.15 Ct. Shape : Oval Cabochan Size/Dimension : 8 x 6.5 MM Color : Red Star 6 Rays Clarity : Opaque Luster : Good Origin : Burma Hardness : 9 Specific Gravity : 3.9 - 4.1 Refractive Index : 1.76 - 1.78 Chemical Composition : Al203 Treatment : Unheated Quantity : 1 Pc (s)