The piece features a four-carat, cushion-cut teal sapphire with two cushion-cut diamonds on either side and a white diamond halo. Klum also had a colored-stone ring for her marriage to Seal.

but Eugenie's is crafted from a rare Padparadscha sapphire. The pink stone is accented by a halo of diamonds and smaller pear-shaped side stones on either side. "Princess Eugenie's ring is ...