An Art Deco diamond panel ring, the oval plaque set with an old mine diamond, estimated as approximately 1.75ct, within a surround of old European diamonds, all bead set in millegrain panels, to an open gallery and a plain band. Surrounding diamonds 1.00 - 1.20ct in total. Indistinctly marked, tested as platinum, 9.35g Principal diamond assessed as: Colour F/G Clarity P1 Ring size O½ Buying this diamond ring at auction could save up to 0.42 tonnes of CO2e compared to buying new. Condition Report: The surrounding diamonds are bright and lively, with a few inclusions visible under 10x magnification. The millegrain edges are well-defined, but some beads of the setting are worn. The band shows evidence of resizing.