2-Greffulhe-par-Nadar (1)

Ruby and diamond jabot pin, Cartier, early 20th centuryEstimate 49,000 — 73,000 CHF. Photo: Sotheby's.

Millegrain-set with circular- and single-cut diamonds, highlighted with a pear-shaped and oval rubies, signed Cartier, numbered. 

Accompanied by a gemmological report. 

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 11 nov. 2015, 10:00 AM