A rare unheated treatment 3.03 carat oval transparent blue sapphire in a four prong mounted, met by the bifurcated diamond inset shank on both sides of the gem, a three diamond cluster lies between the two branches of the shank. .68 carat of VS2/SI1 F/G color diamonds. Item weighs 6.1 grams. Refer to AIGL and GIA reports for details.