Polished shimmering 10 karat yellow gold is the foundation for a stunning diamond promise ring featuring a sparkling lab grown diamonds 1/3 carat (ctw Color SI-SI2, Clarity G-I-I) classic engagement promise ring. 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.