Brooch in 850 thousandth platinum and 750 thousandth white gold featuring a stylized, openwork palmette, entirely set with approximately one hundred old-cut brilliant-cut diamonds, highlighted with suiffé onyx (one small one missing) and cabochon jade jadeite (one with a flaw), pump clasp, palmette base able to accommodate another element, probably strings of pearls as pompons (base disengaged). French Art Deco work circa 1920. Total estimated diamond weight: 1 ct Height 4 cm - Width: 4.1 cm Gross weight : 15.2 g