A Fine Platinum, Yellow Gold, Emerald and Diamond Brooch, Tiffany & Co., Circa 1910, containing one oval mixed cut emerald measuring approximately 13.00 x 11.89 x 4.76 mm within a surround consisting of 12 old European cut diamonds weighing approximately 4.75 carats total.Stamp: TIFFANY & Co.Accompanied by an American Gemological Laboratories emerald identification certificate number CS 71078, dated October 20, 2015, stating Mineral Type: Beryl, Variety: Emerald, Origin: Classic Colombia, Clarity Enhancement: Insignificant, Traditional. 5.50 dwts.