Platinum, sapphire and diamond 'Trombino' ring, Bulgari

Of bombé design, centring on an antique cushion-shaped sapphire weighing approximately 10.00 carats, claw-set within a surround of brilliant-cut and tapered baguette diamonds together weighing approximately 2.80 carats, size M, signed Bulgari.

Accompanied by SSEF report numbered 90742, dated 8 March 2017, stating that the sapphire is approximately 10 carat, natural, blue of medium strong saturation, of Ceylon (Sri Lanka) origin, with no evidence of heat treatment.

Literature

Amanda Triossi, Between Eternity and History, Bulgari, From 1884 to 2009, 125 Years of Italian Jewels, Skira, Milan, 2009, pp. 254-255, 295 (illustrated, another example).