A DIAMOND & SAPPHIRE BOW BROOCH, 1940S in platinum, set with a central old cut diamond accented by step cut synthetic sapphires and old cut diamonds, the diamonds all totalling 2.0-2.5 carats, no assay marks, 7.5cm, 14.2g.

Estimate £1,200 - £1,600

AN ANTIQUE DIAMOND AND ENAMEL DUCK BROOCH in yellow gold and silver, designed as a mallard set with rose cut diamonds, decorated with green, red, blue, yellow and orange enamel, no assay marks, 2.5cm, 3.9g. 

Estimate £800 - £1,200

AN ANTIQUE RUSSIAN DIAMOND, GARNET AND ENAMEL GRASSHOPPER BROOCH in yellow gold and silver, designed as a grasshopper set with an oval cabochon garnet eye, the body jewelled with single and old cut diamonds and decorated with green plique-a-jour enam

Estimate £2,000 - £3,000

AN ANTIQUE MOONSTONE AND DIAMOND BAR BROOCH in yellow gold and platinum, set with a moonstone accented by round and rose cut diamonds, no assay marks, 5.1cm, 3.7g. 

Estimate £350 - £450

AN ANTIQUE DIAMOND FLORAL SPRAY BROOCH in yellow gold and silver, set throughout with old mine cut diamonds totalling 2.5-3.0 carats, no assay marks, 7.5cm, 11.8g.

Estimate £700 - £900

AN ANTIQUE TOPAZ BROOCH in yellow gold, set with a cushion cut topaz, no assay marks, 1.5cm, 2.5g. 

Estimate £300 - £500

A DIAMOND AND PEARL BOW BROOCH in yellow gold and silver, designed as a bow set with old and rose cut diamonds, suspending a baroque pearl drop, no assay marks, 4.5cm, 10.0g. 

Estimate £800 - £1,200

AN ANTIQUE PERIDOT, SAPPHIRE, GARNET AND DIAMOND BROOCH in yellow gold, set with a row of round cut peridot, garnet, and sapphire, accented by scrolls of rose cut diamonds, no assay marks, 3.1cm, 4.0g. 

Estimate £600 - £800

AN ANTIQUE TIGER'S EYE AND DIAMOND BEE BROOCH in yellow gold and silver, the body set with two cabochon tiger's eye, the wings and head jewelled with rose cut diamonds, the eyes set with round cut rubies, French import marks, 2.8cm, 8.0g. 

Estimate £2,000 - £3,000

A MULTICOLOUR TOURMALINE, DIAMOND AND PERIDOT LEAF BROOCH in 18ct yellow gold, designed as a stylised leaf set with oval cut green, blue, pink and red tourmalines, a round cut peridot and round brilliant diamonds, stamped 750, 7.8cm, 15.1g.

Estimate £600 - £800

AN ANTIQUE DIAMOND FLORAL SPRAY BROOCH in yellow gold and silver, designed as a floral spray, the centre flower with an articulated setting, set throughout with old and single cut diamonds all totalling 2.0-2.5 carats, no assay marks, 7.0cm, 13.3g. 

Estimate £1,500 - £2,500

AN ANTIQUE ESSEX CRYSTAL REVERSE CARVED INTAGLIO DOG BROOCH in yellow gold, the painted reverse carved intaglio depicting a snarling dog, no assay marks, 2.5cm, 11.6g. 

Estimate £800 - £1,200

A RETRO DOUBLE CLIP BROOCH in 14ct yellow gold, comprising two geometric halves with beaded details, detachable from the frame to form two clip brooches, stamped 14K, 6.5cm, 20.9g. 

Estimate £2,500 - £3,500

AN ANTIQUE EDWARDIAN ENAMEL BIRD BROOCH in 15ct yellow gold, in an openwork design depicting a wader bird on a watery shore, relieved in yellow, green, blue and white enamel, stamped 15ct, 4.5cm, 4.6g. 

Estimate £1,000 - £1,500

AN ANTIQUE SAPPHIRE AND DIAMOND BAR BROOCH in yellow gold, comprising a row of round cut sapphires and old cut diamonds, no assay marks, 6.3cm, 3.8g. Accompanied by a fitted box. 

Estimate £400 - £600

A DIAMOND PELICAN BROOCH in 18ct yellow gold and platinum, designed as a pelican in flight carrying a branch in its claws, accented by pear and round brilliant cut diamonds, stamped 18K Pt900, 6.7cm, 23.0g. 

Estimate £2,000 - £3,000

A RETRO CITRINE AND DIAMOND BROOCH in 18ct yellow gold, set with an octagonal step cut citrine of approximately 41.80 carats, in a scrolling mount accented by old cut diamonds, no assay marks, 4.4cm, 27.6g. 

Estimate £500 - £700

A RUBY AND DIAMOND FROG BROOCH in yellow gold and silver, designed as a frog set with round brilliant cut diamonds, the eyes set with round cabochon rubies, no assay marks, 2.3cm, 3.6g. 

Estimate £800 - £1,200

AN ANTIQUE FRENCH GARNET BROOCH in 18ct yellow gold, the domed openwork body set with round cut garnets accented by engraved foliate details, suspending three drops set with further garnets, French assay mark, 7.5cm, 26.8g. Accompanied by a fitted Ga

Estimate £1,500 - £2,500

AN ANTIQUE CAMEO AND PEARL BROOCH in yellow gold, set with a round cameo carved to depict the bust of a classical woman wearing a laurel wreath crown, in a border of pearls, no assay marks, 2.0cm, 5.9g. 

Estimate £300 - £500

AN ANTIQUE AMETHYST AND PEARL CLUSTER BROOCH in 14ct yellow gold, set with a cushion cut amethyst of approximately 40.15 carats in a cluster of pearls, marked indistinctly, 3.3cm, 19.1g. Accompanied by a fitted box. 

Estimate £2,000 - £3,000

AN ANTIQUE GARNET FLOWER BROOCH in yellow gold, designed as a flower set with round, pear and marquise cut garnets, no assay marks, 3.7cm, 3.8g. 

Estimate £400 - £600

AN ANTIQUE FRENCH AGATE CAMEO BROOCH in 18ct yellow gold, set with a carved agate cameo depicting the profile of a classical lady, in a border of black enamel and pearls, French assay marks, maker's mark PE, 5.0cm, 32.5g. 

Estimate £1,500 - £2,500

A FRENCH CITRINE AND RUBY BIRD BROOCH in 18ct yellow gold, designed as a bird perched on a branch set with an octagonal step cut citrine, the eye set with a marquise shaped cabochon ruby, French assay marks, 7.1cm, 27.4g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND BROOCH in yellow gold, the circular brooch in filigree design, set with an oval cut sapphire in a cluster of round brilliant cut diamonds, accented by further round brilliant cut diamonds, within a scrolling border set with alt

Estimate £1,500 - £2,500

A REGIMENTAL DIAMOND AND ENAMEL ROYAL ARTILLERY BROOCH in 9ct yellow gold and platinum, in the form of a crown, gun, wheel and rammer, and the regiment's two mottos Ubique and Quo Fas Et Gloria Ducunt, decorated with green, blue and red enamel, and s

Estimate £300 - £500

A CHERUB AND HARP BROOCH in yellow and white gold, designed as a cherub playing a harp, marked indistinctly, 3.0cm, 15.1g. 

Estimate £1,500 - £2,500

A VINTAGE FRENCH AMBER AND ONYX ANIMAL BROOCH in 18ct yellow gold, the textured animal set with an oval cabochon amber and marquise shaped cabochon onyx eyes, signed S.F.A, French assay marks, 5.8cm, 21.3g. 

Estimate £1,500 - £2,500

A VINTAGE TURQUOISE AND DIAMOND BROOCH / PENDANT in 18ct yellow gold, the domed body set with a cluster of single cut diamonds accented by clusters of round cabochon turquoise and round cut diamonds, stamped 750, 3.6cm, 23.9g. 

Estimate £3,000 - £5,000

AN ANTIQUE PEARL AND DIAMOND BROOCH in 18ct yellow gold, the rectangular body set with rows of pearls accented by rose cut diamonds, converted from an antique clasp, French import mark, 3.0cm, 14.3g. 

Estimate £800 - £1,200