1.51 Marquise Diamond Engagement Ring 14kThis solitaire engagement ring features a GIA certified 1. 51 carat marquise cut diamond in 14 karat yellow gold. The center white diamond has an I color grade, meaning it shows a slight warmth that pairs well with the yellow gold setting. The marquise cut creates an elongated shape that flatters the finger while maximizing the visual size of the stone. The diamond is secured in a six prong collet setting that protects the pointed ends of the marquise