BLUE NILE PLATINUM 1.5 CT DIAMOND SOLITAIRE RING: 18K white gold ring with a 1.5 ct emerald cut diamond. This diamond has been graded by the GIA and has the laser registry inscription along with the Blue Nile logo. Color is H, clarity grade of VVSI. Accompanied by the Blue Nile box and GIA and GCAL certificates. Size 4.5.