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Yellow sapphire and diamond ring, Buccellati. Photo Sotheby's.

The oval yellow sapphire set within a sculptural mount accented with brilliant- and single-cut diamonds, signed Buccellati, size 491/2, one small diamond deficient. Estimation 27,000 — 45,000 CHF

Accompanied by SSEF report no. 72237, stating that the yellow sapphire is of Ceylon origin, with no indications of heating.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 13 mai 2014 - http://www.sothebys.com/