Lot 136. A 25.26 carats Ceylon sapphire and diamond pendant necklace. Estimate US$ 80,000 - 120,000 (€75,000 - 110,000). Photo: Bonhams.

of graduated line design, set with round brilliant-cut diamonds, adorned with a detachable pendant centering an oval mixed-cut sapphire, weighing 25.26 carats, within a round brilliant-cut diamond surround;estimated total diamond weight: 27.80 carats; mounted in platinum; necklace length: 15 3/4in. 

Accompanied by AGL report # CS 1078738, dated October 12, 2016, stating the sapphire as: Ceylon (Sri Lanka) origin, no indications of heat or clarity enhancement.