Geoff Rowlandson, gold, cultured pearl brooch

Geoff Rowlandson, gold, cultured pearl and diamond brooch, 'In the Swim', of oval outline, designed as a shoal of fish swimming among reeds and an underwater castle, the polished white gold ground engraved with waves and set with brilliant-cut diamonds symbolising bubbles, length 5.5cm, the reverse inscribed 'In the Swim', signed Geoff Rowlandson, fitted case