A modern classic, this lab-grown diamond engagement ring is a marvelous way to show your love. 18k yellow gold a 4-carat round-cut lab-grown diamond is the scintillating centerpiece petite round-cut lab-grown diamonds line the split shank and sparkle across the bridge a signature element of lab-grown diamonds and milgrain detailing encircles the band, symbolizing unity and eternal love independently certified with a total lab-grown diamond weight of 4 1/3 carats from the monique lhuillier bliss collection, available exclusively at kay this ring is available in limited sizes; if you don't see your size here, please visit a store to order your ring