So exquisite, this lab-grown diamond cluster necklace adds a burst of sparkle to your best looks. Sterling silver with 24k yellow gold vermeil marquise-cut, pear-shaped and round-cut lab-grown 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