Edwardian diamond solitaire ring. Set to centre with a round old cut diamond in an open back claw setting with an approximate weight of 0.60 carats, to an elegant solitaire design featuring curving claws, an intricately pierced gallery and circular open backholing, leading to inwardly tapering raised shoulders and flowing through to a solid D-shape shank. Marked 18 carat yellow gold and platinum, circa 1910.