Sapphire Diamond Ring, from 1960, Vevey. Set with an octagonal cut (oval) deep blue sapphire weighing 4.21 ct, Ceylon, not treated, surrounded by 10 diamonds weighing a total of approx. 1.20 ct, F/G VVS/VS, all in 18K/750 white gold, ring size: 58, 9.1 g. Hallmarks: 750 M Mersmann GGTL Laboratories verbally tested: 25-B-8511 With a copy of the original invoice from B. Mersmann Jewellers (Bijouterie) – Vevey Stock Number: 2174
