An early 19th century seed pearl necklace and matching pairs of bracelets

An early 19th century seed pearl necklace and matching pairs of bracelets, the necklace with three diamond-set spacers in silver and gold and suspend and drop-shaped natural pearl from a circular-cut diamond, the clasp with an oval gold clasp set with four diamonds on blue enamel ground with white enamel border, with a pair of conforming bracelets each with two diamond-set spacers and similar clasp, the three pieces join to form a sautoir, necklace 37cm, bracelets 20cm each, fitted case

Accompanied by report number 5777-7203 dated 31 October 2016 from GCS, London stating that the white pearl meaures 12.5 x 7.5 x 7.0mm approx. and is natural saltwater with no indications of treatment.