PLATINUM 12.58 CT SAPPHIRE RING WITH DIAMONDS: Platinum ring with a single oval mixed cut blue sapphire, approx. 12.58 Ct., VS1 clarity, hue vB, tone 4, saturation 3. The mounting is also set with 2 modified half moon step cut diamonds, approx. .60 Ctw, VS1 clarity, F-G color. The diamonds and sapphires are prong set. Weight, 11.1 grams. No Reserve.