Old mine diamond ring. Set to centre with a cushion shape old mine diamond, K colour, SI2 clarity, with a weight of 1.63 carats, in a open back rubover setting, to an elegant solitaire design featuring millegrain edging, an intricately pierced gallery with chenier detail, leading to fleur-de-lis shoulders and flowing through to a ridged D-shape shank. Tested yellow gold, circa 1905, accompanied by Gemological Institute of America (GIA) report #1236085845.