Plate brooch in platinum 850 ‰, the pin in white gold 750 ‰ of rectangular shape with geometric motifs, entirely set with half-cut brilliants and baguette diamonds, with a larger center of +/- 0.60 ct in supposed I-J / VS quality. Total diamond weight is +/- 3.5 carats. French Art Deco work PB. 20.4 g - Dim. 5 x 2.8 cm