18 karat yellow gold diamond engagement ring. The ring features a round brilliant cut diamond set in an 18 karat yellow gold and diamond setting designed and created by Mark Patterson. The diamond is accompanied by a diamond grading report from the GIA, #5192797741, which indicates that it weighs 1.35 carats, is F in color, SI1 in clarity with Excellent Cut, Polish and Symmetry. The diamond is set in a four prong basket. The ring shank features diamonds set halfway down on each side. The diamonds together weigh 0.13 carats. The diamonds are G in color and VS in clarity. The ring is 18 karat yellow gold. Finger size 6.