Yellow sapphire and diamond ring, Buccellati, of bombe style centring an oval sapphire weighing approximately 3.00 carats framed by a surround of rosettes embellished with round brilliant-cut diamonds, to a burin engraved mount applied with diamond highlights, the diamonds together weighing approximately 0.70 carats, mounted in 18ct gold, size L, signed Buccellati, Italy.