So exquisite, this lab-grown diamond cluster necklace adds a burst of sparkle to your best looks. Platinum plating over sterling silver marquise-cut, pear-shaped and round-cut diamonds adorn the shimmering design total lab-grown diamond weight is 1 carat independently certified a single lab-grown diamond in milgrain detailing is a signature element of the collection 16- to 18-inch adjustable cable chain; lobster clasp from the monique lhuillier bliss collection, available exclusively at kay