Unmarked gold three birds on a branch brooch set with cabochon opals, diamonds and a freshwater

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.

"Birds on a branch" brooch in granulated 14k yellow gold (585‰) and agate cabochons, a close-set diamond to represent the eye Dimensions: 4,5 x 2,3 cmGross weight: 9,3 g

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

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

A vintage 14K yellow gold ring. The crown is set with a row of three diamonds and two white opal cabochons. Unmarked. Total Weight: 2.2 grams. Elegant Mineral Stone Jewelry For Women. Dimensions: Ring

Brooch with three swallows sat upon a branch in 18K yellow gold and backed in silver. The birds’ bodies are set with rose cut diamonds over silver and colored gems.

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

Diamond & Cabochon Sapphire 18K Gold Bird on Branch Brooch Diamond: 3 Diamonds total weight approx. 0.015 carat Measurements: 1.3" x 1" Total weight: 11.6 grams

AN ANTIQUE OPAL AND DIAMOND RING in 18ct yellow gold, set with three cabochon opals punctuated by pairs of old cut diamonds, stamped 18ct, size N / 6.75, 4.2g. 

AN ANTIQUE OPAL AND DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with three cabochon opals, accented by round cut diamonds, stamped 18CT & PT, size L / 5.75, 2.7g.

AN ANTIQUE OPAL AND DIAMOND RING in 18ct yellow gold, set with three cabochon opals punctuated by pairs of old cut diamonds, inscribed JJ - H.B MCK 28/12/20, partial British hallmarks, size M / 6.25,

AN ANTIQUE OPAL AND DIAMOND RING in yellow gold, set with three cabochon opals punctuated by pairs of old cut diamonds, partial British hallmarks, size R1/2 / 9, 3.8g.

A VINTAGE OPAL AND DIAMOND RING in yellow gold, set with three cabochon opals punctuated by pairs of single cut diamonds, no assay marks, size M / 6, 2.9g.

A VINTAGE OPAL AND DIAMOND RING in 18ct yellow gold, set with three cabochon opals punctuated by trios of round cut diamonds, stamped 18ct, size S.5 / 9.25, 4.1g.

AN ANTIQUE EDWARDIAN OPAL AND DIAMOND RING in 18ct yellow gold, set with three cabochon opals punctuated by pairs of old cut diamonds, full British hallmarks for Chester 1904, size R1/2 / 8.75, 4.0g.&

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

AN ANTIQUE VICTORIAN OPAL AND DIAMOND RING, 1897 in 18ct yellow gold, set with three graduated cabochon opals punctuated by pairs of old cut diamonds, full British hallmarks for Birmingham 1897, size

AN ANTIQUE VICTORIAN OPAL AND DIAMOND RING, 1897 in 18ct yellow gold, set with three graduated cabochon opals punctuated by pairs of old cut diamonds, full British hallmarks for Birmingham 1897, size

white gold brooch center bezel set with one oval cabochon cut White Opal, approximately 54.80 carats, accented with 46 full cut round Diamonds [I/I-1], approximate total weight 0.48 carats, 27.1 grams

AN ANTIQUE OPAL AND DIAMOND BAR BROOCH in 18ct gold, set with a central oval cabochon opal between two old cut diamonds, with further rose cut diamonds to the bar, French import marks for 18ct gold, 3

Antique Estate piece" 18 K gold brooch set with three cabochon lapis stones, designed as a three flower bouquet. The green enamel is on the sides, the larger flower has round cut diamonds, prong set,

AN ANTIQUE OPAL AND PEARL ARROW BROOCH in yellow gold, set with an oval cabochon opal accented by seed pearls, unmarked, 6.2cm, 9.7g.

An opal and diamond horseshoe brooch set throughout with opal cabochons and old round-cut diamonds, unmarked (Length: 3cm)

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