Vintage Monture Cartier Burmese sapphire ring. Set to centre with an oval cabochon natural unenhanced Burmese sapphire in an open back rubover setting with an approximate weight of 4.50 carats, to a bombé design with a smooth polished raised border and open backholing, the integrated tapering shoulders flowing to a solid shank. Marked 18 carat yellow gold, signed 'Monture Cartier', makers mark for Cartier, numbered 'HGS3', engraved 'Cts 4.56', English, circa 1970, accompanied by Gemmological Certification Services report #79206-68.
