18k 750/1000th gold and 800/1000th silver "star" brooch centred on an old-cut diamond weighing approx. 1 carat, in a diamond setting. Total estimated diamond weight: 3.10 carats. Late 19th/early 20th century (brooch structure may unscrew). Diameter: 4.5 cm. Gross weight: 16.1 g.