Tiffany & Co. Lucida, platinum, 1.37ct diamond eternity ring. Set with twenty eight octagonal Lucida cut diamonds in open back rubover settings with a combined approximate weight of 1.37 cts, to a smoothly conforming full eternity band featuring polished borders and intricately pierced open back holing, approximately 3.8 mm in width. Marked platinum, signed 'T & Co' for Tiffany & Co. Marked 'Lucida Tm', numbered 'Pat 5970744 et al' ring size L. Finished weight 4.83 grams. Tiffany & Co box and pouch. One stone moving in setting.