So breathtaking, this exquisite lab-grown diamond engagement ring sends a message of forever love. 18k white gold a 4-carat oval-cut lab-grown diamond sparkles at the center ribbons of round-cut lab-grown diamonds drape around the base of the center stone and shimmer on the curved shank a signature element of lab-grown diamonds and milgrain detailing encircles the band, symbolizing unity and eternal love total lab-grown diamond weight is 4 1/3 carats independently certified this ring is available in limited sizes; if you don't see your size here, please visit a store to order your ring from the monique lhuillier bliss collection, available exclusively at kay