Lafonn Lab-Grown Sapphire September Birthstone Halo NecklaceThis Lafonn lab grown sapphire halo necklace brings a deep blue pop of color that looks so real your friends will assume it is the genuine article. The center features a 6mm round cut lab grown sapphire weighing approximately 0. 85 carats, surrounded by a halo of Lassaire simulated diamonds totaling 0. 20 carats. Style BN001SAP18 is crafted in sterling silver bonded with platinum, giving it the heavy feel and bright finish of high end jewelry without