Lot 328. Attractive 45.34 carats fancy yellow diamond necklace, W.A. Bolin, 1960s.  Estimate 355,000 — 455,000 CHF. Photo: Sotheby's

Of foliate design, composed of a line of gold leaves highlighted with brilliant-cut diamonds, the front set with a old European-cut fancy yellow diamond weighing 45.34 carats, length approximately 390mm, maker's mark for W. A. Bolin, Swedish assay marks, case stamped W.A. Bolin.

Accompanied by GIA report no. 2183284076, stating that the diamond is Fancy Yellow, Natural Colour, VS2 Clarity.

Sotheby's. Magnificent Jewels and Noble Jewels, Session 3, Geneva, 16 May 2017, 07:00 PM