Lot 68. Gold, opal and enamel brooch, Tiffany & Co., Designed by Louis Comfort Tiffany, circa 1905. Estimate $12,000–15,000. Photo: Sotheby's.

Centering an oval-shaped cabochon opal within openwork foliate surrounds, flanked by two smaller cabochon opals, decorated with leaves applied with translucent green enamel, gross weight approximately 8 dwts, signed Tiffany & Co.; circa 1905.

Exhibited: Shelburne Museum, Natural Beauties: Jewelry From Art Nouveau to Now, Shelburne, Vermont, 15 November 2014 - 8 March 2015.