BULGARI: EMERALD AND DIAMOND 'TROMBINO' RING, CIRCA 1965The octagonal step-cut emerald between graduated baguette-cut diamond shoulders, in a bombé mount, pavé-set with brilliant-cut diamonds,diamonds approximately 3.60 carats total, signed Bulgari, ring size K, maker's pouchFor further information on this lot please visit theProvenance: Apanied by a report from The Gem & Pearl Laboratory stating that the emerald is of Colombian origin with negligible clarity enhancement. Report number 21849, dated 23rd June 2022.