Just as a beautiful butterfly emerges from a delicate cocoon, this vintage engagement ring's centerpiece diamond bursts forth from a platinum mounting A GIA certified J-colored, SI2-clarity old mine cut diamond weighs 1.39 carats and is prong set in this vintage engagement ring. A collection of ten rose cut diamonds flank the center diamond in an aerial wing arrangement. The combined weight of all the diamonds in this vintage engagement ring is 1.50 carats. Circa 1930.