An early 20th century ruby and diamond-set platinum ring

An early 20th century ruby and diamond-set platinum ring, the oval-shaped ruby weighs 3.62cts and is set with circular and baguette-shaped diamonds, with foliate engraved bifurcated shoulders, size L 1/2

Accompanied by report number 114890 dated 14 October 2020 from SSEF stating that the oval-shaped ruby weights 3.620cts and is a natural ruby with no indications of treatment. Origin: Vietnam