Lab-grown diamonds dance and sparkle on this delicate butterfly necklace—the perfect gift for someone you hold dear. Platinum plating over sterling silver independently certified round-cut lab-grown diamonds total lab-grown diamond weight is 1/3 carat adjustable 18-inch cable chain; lobster clasp a single lab-grown diamond in milgrain detailing is a signature element of the collection from the monique lhuillier bliss collection, available exclusively at kay