Natural pearl and diamond drop cluster pendant-brooch

Suspending a large silvery-grey drop pearl of 21.54ct with rose cut diamond cap and single stone diamond collet surmount, from a circular cluster centred by a large white bouton pearl of 19.48ct bordered by ten cushion cut diamonds, coronet set, accented between by rose cut diamond foliate and crimped-edge collets, mounted in silver and gold, both pearls with rose overtone, having a pendant loop to verso for wear as a pendant, the pearl pendant detachable, the drop pearl approximately 23.0 x 13.3 x 11.7mm, the bouton pearl approximately 14.7 x 14.1 x 12.6mm, total diamond weight approximately 5.65cts, together with SSEF report no. 127076 for the 21.549ct light brownish grey slightly baroque drop pearl and for the 19.484ct for the slightly baroque button shaped white pearl with rose and green overtone giving them both a natural saltwater origin opinion and that the drop shaped pearl shows no indiciations of colour modificiation
Length overall 6cm / 2½''

Width of cluster 3cm / 1 1/8''

Drop pearl approximately 23.0 x 13.3 x 11.7mm

Bouton pearl approximately 14.7 x 14.1 x 12.6mm
Weight: 20g