Very fine natural pearl and diamond ring. Photo Sotheby's The ring centring on a natural pearl measuring approximately 13.45 x 13.65mm, surrounded by old European-cut diamonds together weighing approximately 7.00 carats; accompanied by an extra diamond-set...

An antique natural pearl, diamond and enamel brooch The bouton-shaped pearl weighing 28.87 carats within an old-cut diamond flowerhead surround to the diamond-set foliage and entwined enamelled serpents, one holding a drop-shaped pearl weighing 24.85...