A Belle Époque diamond and natural pearl pendant

A Belle Époque diamond and natural pearl pendant, the pearl millegrain-set within a surround of circular-cut diamonds, suspending from a pear-shaped foliate mount and a bow above, all set with diamonds in platinum on a fine-link platinum chain, pendant 3.6cm, chain 48cm, fitted case by Koch

Accompanied by report number 5777-9366 from GCS, London dated 17th March 2017 stating that the grey pearl measures 8.76 x 7.10mm and is natural saltwater with no indications of treatment