BLUE SAPPHIRE AND DIAMOND RING in platinum with an oval step-cut blue sapphire weighing 18.39 ct flanked by two triangular-cut diamonds weighing approx. 3.85 ct overall. With original certificate from the jeweler Montano, Torino. Accompanied by??SSEF report no.103810 of 30-11-2018 stating that the blue sapphire is from Ceylon (Sri Lanka) with no indications of heating.