Lot 540. Diamond Brooch, LaCloche Frères, France. Estimate 6,000 — 8,000 USD. Lot sold 11,250 USD. Photo: Sotheby's.

Of openwork design, the circular motif with milligrain-set old European-cut diamonds, flanked by curved and geometric forms, accented by single-cut and baguette diamonds, mounted in platinum, signed LaCloche Frères, with French assay and workshop marks.  

Sotheby's. Fine Jewels, New York,  9 déc. 2016