Art Deco Platinum, Peridot and Diamond Ring by Rene Boivin - Macklowe Gallery A French Art Deco platinum ring with peridot and diamonds by René Boivin. The ring centers on a cushion-cut peridot with an approximate weight of 3.25 carats, surrounded by 60 pave set round-cut diamonds with an approximate total weight of 3.60 carats. Certificate of authenticity from Madame Françoise Cailles, expert for Boivin.
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