Rene Boivin, Paris, “Art Moderne” ring set with an oval sapphire (approx. 2+ carats TW) and further set with 22 tapered and full sapphire baguettes (approx. 3 carats TW) and 18 round cut diamonds (approx. 2+ carats TW) all set in a streamlined and contoured platinum mount, signed, certificate, c.1930’s
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