Tiffany & Co. ruby and diamond eternity ring. Set with fifteen square baguette cut natural unenhanced rubies in open back rubover channel settings with a combined approximate weight of 0.75 carats, alternating with twelve round brilliant cut diamonds in open back grain settings with a combined approximate weight of 0.36 carats, to a smoothly conforming full eternity band with fine rubover borders and intricate pierced backholing, approximately 3mm in width. Marked platinum and iridium, signed 'TIFFANY & CO', numbered 'J1161', American, circa 1960.
