Old mine diamond solitaire ring. Set with a cushion shape old mine cut diamond in an open back claw setting with an approximate weight of 0.83 carats, to an elegant solitaire design featuring curving claws, an intricately pierced gallery and open circular backholing, leading to inwardly tapering raised shoulders with chenier detail and flowing through to a solid D-shape shank. Tested platinum, circa 1920.
