An Australian opal and diamond brooch, by Henry Newman & Son, Elizabeth Street, Melbourne circa 1880, set with an oval solid white opal surrounded by ten rose-cut diamonds on a knife edge bar and diamond, set flowerhead terminals, marked 'H. Newman' yellow gold. Exhibited: Schlager's 1988 Bicentenary Exhibition, Little Collins Street, Melbourne Reference: illustrated K. Cavill, G. Cocks and J. Grace Australian Jewellers, Gold & Silversmiths-Makers & Marks,1992, Plate 199