18 ct. yellow gold brooch

Continental, probably French, 18ct yellow gold brooch in the form of a cat with a rose cut diamond inlaid collar and eyes. Stamped, "18C" verso with unidentified partial pictorial hallmarks

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.

An open face pendent watch by Eterna. Yellow metal case with exhibition case back, stamped 18K 0.750. Signed automatic movement. Champagne dial. 24mm. Together with an 18ct yellow gold bow brooch. Tot

An 18ct yellow gold and diamond floral brooch and matching earrings in the Marigold pattern, Trillium design by Joseph Giovanni (who worked for Tiffany's), brooch 3.5 cm diameter, earrings approximate

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 DIAMOND AND RUBY VIOLIN AND BOW BROOCH in 18ct yellow gold, designed to depict a violin together with a bow, the body of the violin set with round cut diamonds, and the fretboard set with step cut r

A PEARL AND DIAMOND EAGLE BROOCH in 18ct yellow gold, designed as an eagle in flight, with diamond jewelled neck, suspending a pearl and diamond drop, French assay marks, 5.8cm, 22.2g.

A SAPPHIRE, DIAMOND AND RUBY PANTHER BROOCH in 18ct yellow gold, set with round cut sapphires, rubies and diamonds, British hallmarks for 18ct gold, 3.9cm, 6.0g.

TIFFANY & CO., A RUBY AND DIAMOND FLOWER BROOCH in 18ct yellow gold, designed as a flower set with a round brilliant cut diamond in a cluster of round cut rubies, signed Tiffany & Co., st

A ROCK CRYSTAL, NEPHRITE AND DIAMOND FLOWER BROOCH in 18ct yellow gold, designed as a sprig of snowdrops, each flower comprising a carved frosted rock crystal set with a round brilliant cut diamond, t

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

AN ART NOUVEAU RUBY AND DIAMOND BROOCH in 18ct yellow gold, in foliate design set with a row of alternating round and oval faceted rubies and old cut diamonds, later full British hallmarks, 3.6cm, 6.5

A DIAMOND, EMERALD, SAPPHIRE AND RUBY BUTTERFLY BROOCH in 18ct yellow gold, designed as a butterfly, the head and abdomen set with a round cut emerald and a marquise cut sapphire and ruby, the wings p

AN ANTIQUE SAPPHIRE, PEARL AND DIAMOND BROOCH in 18ct yellow gold, designed as an elongated oval, set with step cut sapphires, two pearls and two cross motifs set with rose cut diamonds, stamped 750,

AN ART NOUVEAU ENAMEL BROOCH in 18ct yellow gold, of foliate design, decorated with pink and green enamel, stamped 18CT, 2.9cm, 7.0g.

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. 

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

A ST ESPRIT BROOCH in 18ct yellow gold, depicting a dove flying, suspended below a Maltese cross and a plain bar, Portuguese assay marks, 3.9cm, 2.3g.

Hans Hansen, Brooch, 1970s, 18ct yellow gold. 8 grams. D. 5 cm. Execution: Georg Jensen, Copenhagen. Signed: 750, maker's mark, HaH (embossed).,

CARTIER, A VINTAGE CITRINE AND DIAMOND BROOCH, 1940s in 18ct yellow gold, designed as a floral cluster, set with emerald, pear and fancy cut citrines, accented by round cut diamonds, signed Cartier, n

ANDREW GRIMA, A VINTAGE AGATE AND DIAMOND BROOCH, 1973 in 18ct yellow gold, set with a polished slice of agate accented by a round brilliant cut diamond, signed GRIMA, AG Ltd, full British hallmarks f

AN ANTIQUE GARNET, PEARL, DIAMOND AND ENAMEL DEVANT DE CORSAGE BROOCH / PENDANT in 18ct yellow gold, set with a central trefoil of rose cut diamonds within clusters of oval cut garnets and pearls, sur

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,

A CORAL AND DIAMOND ROSE DE NOEL BROOCH / PENDANT in 18ct yellow gold, in the manner of Van Cleef & Arpels Rose de Noel, designed as a flower set at the centre with a cluster of round cut diamonds, en