Pendant - rosette brooch in 18K (750°/°°) yellow gold and silver (800°/°°) with an openwork design of florets and petals, entirely set with rose-cut diamonds and centred with an old-cut diamond weighing approximately 0.15 ct Tête de Cheval" hallmark, late 19th century Diameter: approx. 27 mm - Gross weight: 9 g