A sapphire and diamond three-stone ring

A sapphire and diamond three-stone ring, the square-shaped sapphire set within two circular-cut diamonds in platinum, size P ½

Accompanied by report number 77107-89 dated 27 June 2017 from GCS, London stating that the octagonal-cut sapphire weighs approximately 3.5cts and is a natural sapphire with no indications of heat treatment, origin: Sri Lanka (Ceylon)