Medallion pendant in 18K (750) gold, the face openworked with the word "Souvenir" on an onyx background, the surround embellished with half-pearls, the bélière adorned with foliate branches, set with rose-cut diamonds and half-pearls, the reverse has a compartment. French work, late 19th century. Height: approx. 4.5cm. Gross weight: 51.3g (dent) A late 19th century french diamonds and onyx brooch