Old mine diamond solitaire ring. Set to centre with a cushion shape old mine diamond in a open back rubover setting with an approximate weight of 0.80 carats, to an elegant solitaire design featuring millegrain edging, an intricately pierced gallery and circular open back holding, leading to tri-split shoulders with carved detail, and flowing through to a solid D-shape shank. Marked 18 carat yellow gold, tested platinum, maker's mark 'R.S.H', circa 1905.
