A MODERNIST GEMSET BROOCH in 18ct yellow gold, the rectangular openwork brooch set with cabochon

A VINTAGE DIAMOND PLAQUE BROOCH, 1930s, in 18ct yellow gold and platinum, the openwork brooch set throughout with old cut diamonds, the diamonds totalling 3.0-3.5 carats, stamped 18ct and PL, 4.6cm, 7

A 14 Karat Yellow Gold Brooch. Modernist mounting contains one oval prong set cabochon turquoise 2" x 1.75" Wt: 17.2 grams

A VINTAGE GEMSET FLOWER BASKET BROOCH in 18ct yellow gold and platinum, designed as a basket of flowers, set with single cut diamonds, round cut rubies, emeralds and sapphires, stamped 18ct PLAT, 4.0c

NO RESERVE - A VINTAGE GEMSET FLOWER SPRAY BROOCH in 18ct yellow gold, designed as a bouquet of flowers, set with round cut rubies, sapphires and diamonds, full British import assay marks, 5.5cm, 9.6g

AN ANTIQUE PEARL AND DIAMOND STAR BROOCH / PENDANT in 18ct yellow gold, designed as an openwork star set throughout with pearls, accented by an old cut diamond, one pearl missing, stamped 18CT, 4.5cm,

AN ANTIQUE AMETHYST BROOCH in 18ct yellow gold, set with an oval cut amethyst of approximately 12.63 carats in an openwork foliate border, no assay marks, 4.0cm, 10.2g. 

A 9ct gold gem-set brooch. Of openwork design, the oval opal cabochon, with a split pearl scrolling surround, to the circular-shape sapphire chevron sides. Hallmarks for London, 1988. Length 3.7cms. W

Gem-Set "Parrot" Brooch 14k yellow gold/sterling silver, the body of the parrot mounted with an oval cabochon-cut treated emerald weighing approximately 2.58 carats, accented by round-cut treated sapp

An 18ct gold diamond and gem-set brooch. Designed as a giardinetti, with brilliant-cut diamond openwork basket and marquise-shape ruby, sapphire and emerald flowers. Estimated total diamond weight 0.2

Two-Color Gold, Diamond and Cabochon Gem-Set Flower Pendant-Brooch 18 kt. yellow and white gold, 5 round diamonds ap. 1.45 cts., 162 round diamonds ap. 5.00 cts., 2 oval cabochon sapphires, 2 oval cab

AN ANTIQUE GARNET AND DIAMOND BROOCH in yellow gold and silver, set with a cabochon garnet in an openwork border set with rose cut diamonds, no assay marks, 2.6cm, 5.8g.

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

A 1950's 18ct gold diamond and gem-set bird brooch. The bird, comprising textured feathers with openwork breast, emerald eye and ruby and turquoise tail feathers, resting on a diamond accent branch. M

A 9ct gold gem-set brooch and two opal stickpins. To include a vari-shape opal cabochon openwork brooch, with single-cut diamond highlights, together with two vari-shape opal stickpins. One with hallm

A late 19th century 18ct gold enamel and gem-set butterfly brooch. The rose-cut diamond, ruby cabochon and split pearl butterfly, with black enamel limbs and outline, inset to the plain disc with step

Circa 1945, 18k yellow gold; Bracelet, brooch, and earrings stamped: Tiffany & Co. / 18k Including a bracelet, brooch, ring, and earrings (modified) each bold item set with five large rectangular cit

Italian 18kt yellow gold woven openwork brooch set with 30 round brilliant cut diamonds. Each diamond weighs approx. 0.10 cts each; total approx. diamond weight is 3 cttw. Stamped, "Italy, K18", with

18ct yellow gold & platinum brooch, collet-set with 3x brilliant-cut diamonds, G colour, VS2, central diamond approx 0.12ct. Other two 0.08ct each. 3.8 grams, 5.7cm.

Victorian 14k yellow gold brooch set with approx. 43 small cabochon multi colored turquoise beads and 9 seed pearls set in sterling and raised off a 14k gold leaf and scroll setting. Back has a C clas

14K yellow gold brooch set with small turquoise round cabochons. Weight: 5.1g.

Ladies 18kt yellow gold coral brooch featuring 3 prong set cabochon cut coral mounted in a floral design and accented with blue enameling. Measures approx 2". Weight 10.7 grams.

An Opal Brooch. 14 karat yellow gold starburst brooch contains six prong set oval cabochon opals Diameter: 1.75" Wt: 10.7 grams

14k yellow Gold Victorian Brooch Set with Single Opal Cabochon: Stunning brooch weighing 10.5 grams, set with single oval opal cabochon. Overall measurement is 2" in length.

Unmarked yellow gold brooch set with 30 light blue stone cabochons, likely turquoise. Ca. early - mid 20th century. Unmarked brooch, but tests as over 16 karat gold. About 52 mm by 54 mm. Total weight