Cartier, an Art Deco diamond brooch
Cartier, an Art Deco diamond brooch, circa 1930, designed as a stylised ruyi, set with circular-cut and baguette diamonds, length 3.4cm, signed Cartier Paris, numbered 04437, French assay marks for 18ct gold and platinum, indistinct French maker's marks, original fitted case stamped Cartier, numbered 04437