A Platinum, 18 Karat Yellow Gold, Sapphire and Diamond Ring, David Webb, containing one rectangular cut-corner step cut sapphire weighing approximately 17.59 carats and 104 round brilliant cut diamonds weighing approximately 4.75 carats total.Stamp: WEBB 10% IRID.Accompanied by an American Gemological Laboratories sapphire identification and origin certificate number CS 62301, dated July 23, 2014, stating Mineral Type: Natural Corundum, Variety: Sapphire, Origin: Ceylon (Sri Lanka), Enhancement: No gemological evidence of heat, Clarity Enhancement: None.Accompanied by a David Webb certificate of authenticity, dated October 17, 2014, stating that the present ring is style number 32295R and that it is a genuine DAVID WEBB item. 14.80 dwts.