Art Deco Sapphire & Diamond Plaque Cluster Ring in Platinum

Art Deco sapphire and diamond plaque cluster ring in platinum. Centrally set with an octagonal step cut sapphire in a millegrain setting, surrounded and flanked by round old cut diamonds in grain and millegrain settings, to a curved navette cluster design with openwork details, and scrolling carved gallery, the raised shoulders flow to a solid shank. Marked platinum.