Impressive gemstone dress ring, 18ct white gold, claw set with a fine oval cut natural 4.05ct blue Ceylon sapphire, surrounded by a halo of brilliant cut diamonds and claw set with six natural oval cut rubies and six natural oval cut emeralds, with an outer border of round pale Ceylonese sapphires, stamped '18K', includes GIA certificate, size P, total weight 10.9 grams