Art Deco diamond solitaire ring. Set with one round old cut diamond in an open back grain setting with an approximate weight of 1.15 carats, to an angular solitaire design featuring linear lines, a polished gallery and open backholing, leading to tapering shoulders engraved with a foliate motif and flowing through to a solid flat shank. Tested white gold, engraved to interior '16-3-1930', circa 1930.