A diamond, cultured pearl and gem-set brooch/pendant, the openwork plaque of foliate motif, set throughout with round brilliant-cut diamonds, centring an oval cabochon ruby and diamond cluster, accented by a single square-shaped emerald, the articulated drop-shaped South Sea pearl, measuring approximately 11.0 mm, with associated neckchain (not illustrated), diamonds approximately 0.94 carat total, length 4.5 cm