81. CARTIER: AMETHYST, TURQUOISE AND DIAMOND 'DUCK' CLIP/PENDANT, LATE 1950S Forming a stylised duck, set with an oval amethyst, turquoise cabochons and brilliant-cut diamonds, on a textured yellow gold mounting, signed Cartier Paris, numbered, French hallmarks for 18K gold (750°/00) and platinum (850°/00), master hallmarks for Cartier, size 4.80 x 3.50 cm, gross weight 17.22 g. CARTIER: AMETHYST, TURQUOISE AND DIAMOND 'DUCK' CLIP/PENDANT, LATE 1950 Designed as a stylised duck, set with an oval-cut amethyst, turquoise cabochons and brilliant-cut diamonds, to a textured yellow gold mount, signed Cartier Paris, numbered, French assay marks for 18 carat gold and platinum, maker's mark for Cartier, measurements 4.80 x 3.50 cm, gross weight 17.22 grams.