An Art Deco Platinum, Emerald, Diamond, and Multigem Clip Brooch, in a geometric openwork design with millegraine edgework, containing one octagonal step cut emerald measuring approximately 9.50 x 9.00 x 4.55 mm, numerous transitional brilliant and old European cut diamonds weighing approximately 3.55 carats total, seven calibre cut onyx, and 15 calibre cut simulated emeralds.Accompanied by an American Gemological Laboratories emerald identification certificate number CS 71149, dated October 27, 2015, stating Mineral Type: Natural Beryl, Variety: Emerald, Origin: Colombia, Clarity Enhancement: Insignificant, Traditional. 8.90 dwts.