Lot 9113. Ruby Bead and Diamond Necklace, Michele della Valle. Estimate 880,000 — 1,200,000 HKD. Lot Sold 687,500 HKD. Photo: Sotheby's. 

Designed as five rows of graduated ruby beads, spaced by diamond-set rondelles, embellished with circular-cut diamond lozenge-shaped frames, the rubies and diamonds weighing approximately 2,100.00 and 12.00 carats in total respectively, mounted in 18 karat white gold, signed MdV, with Italian assay mark, length approximately 880mm.

Provenance: Formerly owned by Ornella Vanoni.

Sotheby's. Important Jewels and Jadeite, Hong Kong, 12 Oct 2017, 02:00 PM