Lafonn Sterling Silver .65ct Simulated Diamond Necklace. This round solitaire necklace is platinum bonded sterling silver and has a .65ct round Lassaire simulated diamond within a 4 prong setting. There is also a hidden surprise of a .25ct Lassaire simulated diamond bezel set on the closure. Comes attached to a platinum bonded sterling silver 20 inch adjustable necklace. All Lafonn pieces come with a full lifetime manufacturers warranty.