A platinum, sapphire and diamond ring, circa 1930, with certificateA platinum, sapphire and diamond ring, circa 1930, with certificate Cushion cut Ceylon sapphire approx. ct 11,00 Huit-huit and baguette cut diamonds Weight g 11,20 size 10 With ACG certificate, n. 7212021, 04/2021, the sapphire has no indications of heating