GOLD, SILVER AND DIAMOND 'FLEUR DE LYS' BROOCH, 19TH CENTURY gold and silver brooch in the shape of a fleur-de-lys, set with old cut diamonds weighing approximately 5.00 ct, removable brooch system hallmarks: 'rhinoceros 5.5 x 4 cm gross weight: 17.56 gr. FLEUR DE LYS' GOLD AND SILVER AND DIAMONDS BROOCH, 19TH CENTURY fleur de lys-shaped gold and silver brooch set with old-cut diamonds weighing approximately 5.00 ct., removable brooch system Hallmarks: 'rhinoceros' 5.5 x 4 cm gross weight: 17.56 gr.