Aquamarine, Pink Tourmaline and Amethyst Ring

18 karat white gold ring bezel-set with a 1.45 carat cushion-cut aquamarine, a 0.73 carat round pink tourmaline and a 1.90 carat oval-cut amethyst all adorned by 3 round brilliant cut diamonds (total weight of 0.19 carats, G-color and VS-SI clarity).