Art Deco solitaire diamond ring. Set to centre with one cushion shape old mine diamond, E colour, SI1 clarity with a weight of 2.06 carats, in an open back claw setting, flanked by four rectangular baguette cut diamonds in open back rubover settings with a combined weight of 0.50 carats. The total approximate diamond weight is 2.56 carats, to a geometric openwork gallery, intricately pierced backholing, with gently sloping shoulders flowing down to a solid D-shape shank. Marked platinum, circa 1930, accompanied by HRD report #170003046434.