Vintage Sapphire & Diamond Curved Navette Cluster Ring in Platinum

Vintage sapphire and diamond curved navette cluster ring in platinum. Set with an estimated 0.20ct oval mixed cut sapphire in a grain setting, surrounded and flanked by round Old European cut and round eight cut diamonds in grain settings, to a rounded marquise cluster with scalloped edges, pierced openwork gallery and flanked to either side with tri-split shoulders which smooth to a solid shank. Estimated total diamond weight 1.30cts. Marked platinum.