A Fine 18 Karat Yellow Gold, Sapphire and Diamond Demi Parure, consisting of a collar necklace containing 18 oval cabochon cut sapphires ranging in size from approximately 17.60 x 14.20 x 9.50 mm to 11.70 x 9.00 x 4.88 mm, weighing approximately 255.00 carats total, 123 calibre tapered baguette cut sapphires weighing approximately 6.00 carats total, and numerous round brilliant cut diamonds weighing approximately 11.00 carats total, together with a pair of matching earclips containing two oval cabochon cut sapphires measuring approximately 9.96 x 9.68 x 7.46 mm and 9.86 x 9.05 x 7.80 mm respectively, weighing approximately 14.98 carats total, 18 tapered baguette cut sapphires weighing approximately 1.80 carats total, and numerous round brilliant cut diamonds weighing approximately 1.86 carats total, with collapsible posts.Necklace stamp: 750 (maker's mark W within circle) 87087.Earring stamp: 750 (maker's mark W within circle) (hand inscribed 87967).Accompanied by an American Gemological Laboratories sapphire identification and origin certificate number CS 1075809, dated June 2, 2016, stating the following for an excess of 50% of the sapphires tested in the necklace: Mineral Type: Natural Corundum, Variety: Sapphire, Origin: Ceylon (Sri Lanka), Enhancement: No indications of heat enhancement, Clarity Enhancement: None. 129.70 dwts.