Hard to believe just two years ago, the world watched with rapture as Kate Middleton married Prince William, and now, the Duchess of Cambridge is expecting the couple's first child. Kate's ring, an iconic heirloom from the late Princess Diana is a spectacular oval shaped sapphire surrounded by a halo of diamonds. Love Kate's ring? Mervis has a near exact replica of the platinum, sapphire and diamond ring available HERE. The Mervis ring, pictured below, features a platinum band with a 3 carat oval cut sapphire.