14kt White Gold Solitaire Engagement Ring. The Center Diamond is a 4.72 carat IGI graded Lab-Grown Oval-shape Diamond (IGI LG642431767), “Excellent” Cut, F Color and VS1 Clarity. The Setting takes a hidden halo of 1.10 mm Diamonds and a “surprise” 1.10 mm Diamonds set into the band, on either side, all totaling 0.25 carats additional.