An undeniable message of love, this exquisite heart-shaped necklace from the leo® diamond collection is the ultimate gift. 14k white gold round-cut diamonds line the open heart pendant total diamond weight is 1/2 carat 17- to 19-inch adjustable 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