Lot 651. A fine 13.20 carats Ceylon sapphire and diamond ring, by Harry Winston, 1974. Estimate HK$ 500,000 - 800,000 (€61,000 - 97,000). Sold for HK$ 1,480,000 (€ 176,217). Photo: Bonhams.

The oval-cut sapphire, weighing 13.20 carats, flanked by a pair of trillion-cut diamonds, signed Winston, ring size 7

Accompanied by a SSEF report stating that the natural Royal Blue sapphire has no indication of thermal treatment and originates from Ceylon (Sri Lanka). Report number 81943, dated 25 September 2015. 

Also accompanied by an original inventory letter and a copy of documentation from Harry Winston.

Bonhams. RARE JEWELS & JADEITE, 30 Nov 2015 17:00 HKT - HONG KONG, ADMIRALTY