A classic pair of cushion-cut shaped green peridots 1.40 carats (ctw) is surrounded by a halo of 3/8 carat (ctw) of sparkling white lab-grown diamonds in these solitaire earrings the birthstone for August, all set in gleaming 14 karat white gold. Lab grown diamonds are man-made diamonds that are chemically, physically, and optically identical to diamonds originating from nature. Both have the same chemical composition and atomic structure, producing the very same durability, fire, and sparkle, The only difference is the origin.