Lot 32. A 3.49 carats sapphire and diamond ring, Black Starr & Frost. Estimate US$ 250,000 - 350,000 (€220,000 - 310,000). Photo: Bonhams.

centering an antique cushion brilliant-cut sapphire, weighing 3.49 carats, within a diamond-set ornate basket and split shank; signed BS&F; mounted in 18k gold; size 5

Accompanied by AGL report # CS 1073522, dated February 23, 2016, stating the sapphire as: Kashmir origin, no indications of heat.

Accompanied by Gubelin report # 15067378, dated June 30, 2015, stating the sapphire as: Kashmir origin, no indications of heat.

Accompanied by SSEF report # 79849, dated April 17, 2015, stating the sapphire as: Kashmir origin, no indications of heat.

Bonhams. FINE JEWELLERY, 15:00 EDT, NEW YORK