RUBY AND DIAMOND CLUSTER RING, MID 20TH CENTURYThe oval-cut ruby, weighing 2.51 carats, within a surround of brilliant-cut diamonds, between baguette-cut diamond-set shoulders,ring size NFor further information on this lot please visit theProvenance: Apanied by a report from GCS stating that the ruby is of Thai origin, with no indications of heat treatment. Report number 5782-2912 dated 24th August 2022.