A piece from our iconic classics bridal collection - timeless designs crafted for a lifetime. Express your forever affection with the wondrous look of this marquise-cut lab-grown diamond frame engagement ring in 14k gold. 14k yellow gold 3 ct. Marquise-cut lab-grown diamond lab-grown diamond frame and shank certified lab-grown diamonds; f color/vs2 clarity includes certification card 3-1/2 cts. T. W. Of lab-grown diamonds