An Art Deco French diamond-set giardinetto brooch
An Art Deco French diamond-set giardinetto brooch, the foliate sections set with triangular and marquise-shaped diamonds and smaller circular-cut diamonds, the urn centred with baguette-shaped diamonds and further circular-cut diamonds in platinum, French control marks, rubbed inventory number 23339, fitted case by Mallet of Bath, 4.3cm high