A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING

in 18ct white gold and platinum, set with an oval-cut purple sapphire of c.5.00 carats held in a milgrained bezel setting, surrounded by a halo of old European-cut diamonds totalling c.1.00 carats, no assay marks, UK size M1/2 / Eu size 53.5, (c.7.9g), the sapphire has a verbal gemmological assessment stating that it is of Sri Lankan origin with no indications of heat treatment