A pearl and diamond jabot pin

A pearl and diamond jabot pin, the circular and lozenge-shaped terminals set with diamonds, suspending a grey pearl in platinum and white gold, French marks, 6cm wide

Accompanied by report number 78144-28 dated 22 February 2018 from GCS, London, stating that the grey pearl measures 17.0 x 13.1 x 9.4mm and is natural saltwater with no indications of treatment