Tiffany & Co: a ruby and diamond Embrace band/eternity ring, set with ten circular facet cut rubies, each measuring approximately 3.7 x 2.4mm, weighing a total of approximately 2.40 carats, and ten brilliant cut diamonds, weighing a total of approximately 1.50 carats, on 18ct. yellow gold shank, stamped 'Tiffany & Co. 750', ring size O. See illustration