12 avril 2016
Platinum, Diamond and Onyx Brooch, René Boivin, France, circa 1910-1915
Lot 315. Platinum, 7.01 and 6.98 carats Diamond and Onyx Brooch, René Boivin, France. Estimate 250,000 — 350,000 USD. Photo: Sotheby's. The elongated C-form, with terminals set with old mine-cut diamonds weighing 7.01 and 6.98 carats, accented by calibré-cut...