Diamond Onyx Brooch, Art Deco around 1910 an octagonal onyx plate, in the center an old cut diamond of ca. 0.10 ct H/J P, surrounded by 78 small diamond roses, in 18K/750 yellow gold and platinum, 5.24 g a very typical, pretty Art Deco brooch, with a lovely Millgrain edging. Hallmarks: none Stock Number: 1817
