An Art Deco Platinum, Ruby, Diamond and Onyx Ring, containing one oval cabochon cut ruby measuring approximately 16.80 x 14.50 x 5.00 mm, 37 old European cut diamonds weighing approximately 0.74 carat total, two triangular buff top rubies, and 12 calibre cut buff top onyx, openwork gallery and shoulders with scrollwork accents.Accompanied by an American Gemological Laboratories ruby identification and origin certificate number CS 1077949, dated August 31, 2016, stating Mineral Type: Natural Corundum, Variety: Ruby, Origin: Burma, Enhancement: None, Clarity Enhancement: None. 5.00 dwts.