Sweet and sparkly, this flower halo necklace is a delightful look for the one you love. 10k white gold a 1/2-carat round-cut lab-grown diamond, artfully set to enhance size and sparkle, is wrapped in a flower frame and halo of dainty round lab-grown diamonds the lab-grown diamonds are independently certified total lab-grown diamond weight is 1 1/4 carats 16- to 18-inch adjustable cable chain; spring ring clasp from the kay lab-grown diamonds collection