A Fine Platinum, Kashmir Sapphire and Diamond Ring, J.E. Caldwell, Circa 1910, containing one antique cushion cut sapphire weighing approximately 5.05 carats, and two old mine cut diamonds weighing approximately 4.07 carats total.Stamp: JEC&CO F20538.Accompanied by an American Gemological Laboratories sapphire identification and origin certificate number CS 1076247, dated June 17, 2016, stating Weight: 5.05 cts, Mineral Type: Natural Corundum, Variety: Sapphire, Origin: Kashmir, Enhancement: No gemological evidence of heat, Clarity Enhancement: None. Accompanied by a Swiss Gemological Institute (SSEF) sapphire identification and origin certificate number 86622, dated June 27, 2016, stating Weight: 5.056 ct, Mineral Type: Natural Corundum, Variety: Sapphire, Origin: Kashmir, No indications of heating. 5.00 dwts.