A purple sapphire and diamond cluster ring, GCS: Sri Lanka, no heat

A purple sapphire and diamond cluster ring, the cushion-shaped purple sapphire weighs approximately 3.30cts, set within a surround of round brilliant-cut diamonds in platinum and gold, 18ct Sheffield hallmarks for 1990, size N

Accompanied by report number 5782-653 dated 2nd Febraury 2022 from GCS stating that the oval-shaped sapphire weighs approximately 3.20cts and is a natural purple sapphire. Origin: Sri Lanka: Ceylon