Edwardian diamond three stone ring. Set with three round old cut diamonds in open back grain settings with a combined approximate weight of 1.30 carats, to an elegant three stone design featuring curving claws, an intricate gallery with heart motifs and open round backholing, leading to inwardly tapering shoulders with chenier detail and flowing through to a solid flat shank. Marked platinum, engraved 'US', circa 1910.