Lot 386. Ruby and Diamond Necklace, Marchak, France, circa 1950. Estimate 60,000 — 80,000 USDLot sold 100,000 USD. Courtesy Sotheby's.

Composed of braided gold ropework, interspersed with baguette diamonds, embellished with carved rubies and floral motifs set with ruby beads and round and baguette diamonds, length 15 inches, signed Marchak, with French assay and workshop marks; circa 1950. 

Sotheby's. The Jeweler’s Eye: The Personal Collection of Fred Leighton, New York, 18 Apr 2018, 02:00 PM