Deborah Pagani 18-Karat White Gold Double Horseshoe Ring with Blue Sapphires and Diamonds. 18K white gold double horseshoe ring set with two large blue oval cut sapphire center stones and white diamonds. Diamonds: 1.20 carats, Sapphire: 2.05 carats. Double the luck and double the sparkle. This ring is the perfect size for someone who is not looking for an oversized cocktail ring, but wants to make a shining statement. White diamonds surround two blue sapphires that are divided by a row of baguettes.