AN OPAL AND DIAMOND BROOCH in yellow gold, set with a

AN OPAL AND DIAMOND BROOCH in yellow gold, set with a cabochon opal of approximately 13.61 carats, in a border of old cut diamonds totalling approximately 1.40 carats, unmarked, 2.5cm, 7.3g.

AN ANTIQUE OPAL AND DIAMOND BROOCH in yellow gold and silver, set with a central cabochon opal within a scrolling openwork mount set with old cut diamonds, the diamonds all totalling 5.3-5.5 carats, n

AN ANTIQUE OPAL AND DIAMOND BROOCH in yellow gold and silver, set with a trio of graduated oval cabochon opals, accented by rose cut diamonds, no assay marks, 3.5cm, 2.6g.

NO RESERVE - AN ANTIQUE ART NOUVEAU DIAMOND AND OPAL BAR BROOCH in 15ct yellow gold, set with an old cut diamond and an opal cabochon within two scrolling bars, stamped 15, 4.0cm, 3.9g.

AN OPAL, AMETHYST AND DIAMOND SPIDER BROOCH in yellow gold and silver, the body set with a round cabochon opal and a round cut amethysts accented by rose cut diamonds in the legs, unmarked, 3.7cm, 8.9

AN ANTIQUE OPAL AND DIAMOND BROOCH in yellow gold and silver, formed of a trio of flower motifs, each set at the centre with a round cabochon opal, accented in the petals by rose cut diamonds, unmarke

10k white and yellow gold pin brooch, set with a central round shaped cabochon opal, approximate total weight of opal 1.57ct, flanked by four old European cut diamonds, approximate total weight of dia

This wonderful and romantic Victorian-era brooch shimmers with 12 colorful heart shaped opals and 44 sparkling old mine-cut diamonds, all of which are set in 14K gold. This distinctive and dreamy anti

ANTIQUE OPAL, DIAMOND AND ENAMEL BROOCH, 19TH CENTURY in high carat yellow gold, in open heart design set with a moon cabochon opal, old and rose cut diamonds totalling approximately 10.00 carats and

Ruby diamond opal brooch; steel and 18K yellow gold brooch with worn hallmarks; Test: white metal not gold/18K yellow gold, one oval 7x5mm opal is bezel set with small 3.5mm pearl accent set into yell

AN ANTIQUE OPAL AND DIAMOND BROOCH, 19TH CENTURY in high carat yellow gold, designed as a crescent moon jewelled with graduated cabochon opals accented by old and rose cut diamonds, set to a plain bar

Large oval 14K yellow gold brooch with hidden bail on back to convert to a pendant, set with large white opal cabochon and the foliate frame set with brilliant cut white diamonds, height 2", width 1.7

Antique Victorian Opal, diamond, enamel, and gold brooch Set with cabochon opals and rose-cut diamonds, in a swirling surround of black enamel; 1880s Yellow gold 2.75 x 1.25 in; Gross weight 12.0 dwts

the brooch set with 11 oval opals (center opal with moderate chip), and a (9x7mm) teardrop opal dangle, accented with 10 round diamonds (0.28ctw), and seed pearls, in yellow gold, stamped 14K (pin ste

set with 17 oval opals (center opal 7x6mm), accented with 24 round diamonds approx. 1.00 carats, in yellow gold stamped 14K, 1.6x1.5in., 12.5gms.

14 kt. Yellow Gold, Opal and Diamond Pendant/Brooch Necklace , central oval cabochon opal, wt. approx. 7.00 cts.; pierced filigree surround set with 38 round cut diamonds, total wt. approx. 2.00 cts.;

Vintage butterfly brooch with two opal wings set on 14k white gold, 14k yellow gold and silver. Edged with small diamonds. Central body in white gold with our round diamonds and two ruby cabochon eyes

Set with 3 round opals each approx. 4.5mm, and a center (5pt) diamond over an onyx stone approx. 15x11mm, in yellow gold stamped 14K, 2.5x2.25in., 21.2gms. Opening Bid: $500/

cluster brooch set with one oval cabochon cut White Opal, approximately 3.59 carats, enhanced with two pear shape cabochon cut White Opals, approximate total weight 1.09 carats, accented with 13 full

Designed as an open-winged butterfly with round-faceted or cabochon opals, rubies, sapphires, emeralds and RBC diamonds, .60 ct. TW. Mid 20th c. Stamped 14k. 1 1/4" x 2". 10.7 dwt. Provenance: From th

American, mid-20th century. Stamped "14K" yellow gold pendant/brooch, also stamped "SB" (Berman & Co., Sydney). Designed with open scroll work and center fleur de lis motif, set with eight round opals

18kt yellow gold floral form brooch with filigree leaves and petals. Flower is comprised of a central bezel set circular opal, (4) full cut diamonds, and (1) Old Mine cut diamond. Opal measures approx

the lovely brooch set with 2 opals. Meas; 11 x9 mm, 9x6 mm, 5 cultured pearls, measuring from 4-6mm. Eyes are set with rubies, one diamond under the nest. Weighs 8.7 gr. Stamped. Measures 1 1/2 x 1 1/

18K yellow gold and 14K white gold Art Nouveau style plique-à-jour dragonfly brooch set with a cabochon opal, two cabochon aquamarine eyes and round cut diamond accents. Apparently unmarked but tes