1. Charles, Prince of Wales, proposed to Lady Diana Spencer in February of 1981, presenting her with an oval-shaped blue sapphire surrounded by a halo of tiny solitaire diamonds on a white gold band. (She chose it herself!) Diana's ring pick reportedly raised some eyebrows since it wasn't custom-made, but rather available for general purchase in Garrard's jewelry collection at the time.
Prince William, Duke of Cambridge, gave his mother's ring to Kate Middleton, Duchess of Cambridge, when he proposed in 2010, keeping the memory of the beloved Princess Diana alive through the ring's stunning beauty and symbolic meaning. Talk about timeless! The deep blue sapphire is just as brilliant on Kate's ring finger as it was on Diana's.