Say yes to the elegant twist design of this stunning emerald-cut lab-grown diamond engagement ring from kleinfeldâ® x zales. Fashioned in sleek platinum the 1-1/2 ct. Emerald-cut lab-grown diamond center stone boasts a color rank of f and clarity of vs2. Round lab-grown diamonds line the halo frame and the twist ribbons of the split shank. This engagement ring dazzles with 2-1/5 cts. T. W. Of lab-grown diamonds. Designed exclusively for zales.