Antique Gold and Pink Topaz Necklace and Pair of Pendant-Earrings. Photo courtesy Doyle New York

18 kt., the necklace composed of scrolled ribbons and decorative garland links, centering 12 oval pink topaz, flanked by 36 oval pink topaz, the pendant-earrings of similar design set with 6 oval and pear-shaped pink topaz, circa 1830, approximately 36.8 dwts. Length 17 1/4 inches. Estimate $8,000-12,000

Antique Gold, Foiled-Back Pink Topaz and Yellow Chrysoberyl Cannetille Brooch. Photo courtesy Doyle New York

The fancy-shaped brooch of cannetille floret and scroll decoration supporting three flexibly-set pendants, embellished by 2 oval foiled-back pink topaz approximately 10.4 x 21.0 mm. and 11.0 x 7.6 mm., accented by 10 vari-shaped yellow chrysoberyl and 4 small round pink topaz, circa 1830, approximately 20.3 dwts. Estimate $8,000-12,000

Antique Gold and Foiled-Back Pink Topaz Necklace. Photo courtesy Doyle New York

Composed of pairs of looped links surmounted by a stylized repousse bow motif, centering 24 oval and pear-shaped foiled-back pink topaz set within a floral design, decorated with repousse scrolls, flanked by finely detailed gold leaves, completed by a clasp centering one oval pink topaz quartered by repousse gold scrolls, circa 1830, approximately 26 dwts. Length 17 inches. Estimate $8,000-12,000 

Antique Silver, Gold, Foiled-Back Pink Topaz and Diamond Ring. Photo courtesy Doyle New York

Centering one oval pink topaz approximately 11.4 x 8.4 mm., surrounded by rose-cut diamonds, signed T.&D., with hallmarks, circa 1820, one diamond missing. Size 7. Estimate $3,000-4,000

Antique Cannetille Gold and Foiled-Back Pink Topaz Cross Pendant-Brooch. Photo courtesy Doyle New York

The cross highlighted by cannetille decoration, centering and quartered by 4 rectangular-cut and one square cushion-shaped foiled-back pink topaz, topped by a pendant loop of similar decoration centering one pear-shaped foiled-back pink topaz, circa 1830, with metal pin fitting, approximately 5.2 dwts. Estimate $1,500-2,000

Doyle New York. Important Jewelry. Wednesday, September 25, 2013 at 10am -http://www.doylenewyork.com/