Sotheby's Important Jewels, New York, September 20, 2012

Gold, Tourmaline, Diamond, Seed Pearl and Enamel Brooch, Carlo Giuliano, Circa 1870

Estimate: 5,000 – 7,000 USD

Of openwork design set with four emerald-cut tourmalines, accented by old mine and single-cut diamonds, bordered by seed pearls measuring approximately 3.4 to 3.7 mm, heightened with enamelwork in foliate and scrollwork motifs, stamped C.G.