SAPPHIRE AND DIAMOND CLUSTER RING, 19TH CENTURYThe cushion-shaped sapphire, weighing 5.74 carats, within a border of old brilliant-cut diamonds, between scroll engraved bifurcated shoulders in 18 carat gold,diamonds approximately 1.80 carats total, later sponsor's mark and London hallmark, size KFor further information on this lot please visit theProvenance: Apanied by a report from GCS stating that the sapphire is of Sri Lankan origin, with no indications of heat treatment. Report number 5782-2911 24th dated August 2022.