Light up any room with the attractive sparkle of this halo necklace from the leo® diamond collection. 14k white gold round-cut diamonds shimmer on the circle halo pendant and bail total diamond weight is 5/8 carat adjustable 17- to 19-inch rolo chain with lobster clasp the leo® diamond is the first diamond independently certified to be visibly brighter patented technology strategically places additional facets onto the diamond, maximizing the return of light and creating faraway sparkle