A natural pearl and diamond cluster ring

A natural pearl and diamond cluster ring, centred with a black natural pearl within a quatrefoil of old cushion-shaped diamonds in platinum and gold, size O

Accompanied by report number 5776-4764 dated 26 February 2016 from GCS, London stating that the black pearl measures 7.3 - 7.4 x 5.5mm approx. and is natural saltwater with no indications of treatment.