Edwardian diamond crossover ring. Diagonally set to centre with one cushion shape old mine cut diamond, G colour, VS2 clarity with an approximate weight of 1.00 carats in an open back claw setting, further set with one cushion shape old mine diamond, G colour, VS1 clarity with an approximate weight of 0.91 carats in an open back claw setting, flanked by ten round eight cut diamonds in open back grain settings with a combined approximate weight of 0.25 carats. The total approximate diamond weight is 2.16 carats, to an elegant crossover design featuring curving claws, an intricately pierced gallery with stylised foliate detail and fancy open backholing, the tapering shoulders flowing to a solid D-shape shank. Marked platinum, numbered ‘202’, circa 1915, accompanied by Gemological Institute of America (G.I.A.) reports #2161148469 & 2161225302.