Lot 206. Pair of Colombian emerald and diamond pendent ear clips, Boucheron. Estimate CHF 36,000 — 46,000. Photo: Sotheby's.

Each set with a step-cut emerald weighing 5.16 and 5.50 carats respectively, within a frame of brilliant-cut diamonds, supporting a pear-shaped emerald weighing 8.99 and 10.44 carats respectively, surrounded with brilliant-cut diamonds, signed Boucheron, French assay and maker's marks. 

Accompanied by SSEF report no. 80454, stating that the four emeralds are of Colombian origin, with a moderate amount of oil in fissures.