A natural pearl and diamond pendant/brooch, late 19th century, of circular outline, centring on a

A natural pearl and diamond pendant/brooch, late 19th century, of circular outline, centring on a natural pearl measuring 8.62-8.70 x 8.20mm, within a border of rose-cut and cushion-shaped diamonds, and an outer edge of smaller natural pearls measuring 3.2-3.5 mm, mounted in gold, diameter 2.5cm excluding bail

Accompanied by GCS report no. 81278-23, stating that the central pearl is natural, freshwater, and the outer pearls are natural, saltwater