This exquisite, contoured diamond wedding band is handcrafted specifically to fit our stunning Duchess of Cambridge style gemstone rings with the reference FET27. There are four versions available, and this one is made with sparkling, environmentally sustainable lab grown diamonds set in the finest white gold. Simply beautiful. Sapphire Ring Not Included. *The sustainable luxury choice. Lab-grown diamonds are chemically and optically identical in brilliance and beauty to a natural mined diamond.