NO RESERVE - AN ANTIQUE RUSSIAN SAPPHIRE AND DIAMOND BROOCH, CIRCA 1910, in 14ct (56 zolotnik) yellow gold and silver, set with three oval cut sapphires and rose cut diamonds, Russian assay mark for 56 zolotnik gold, St Petersburg (1908-17), maker's

Estimate £200 - £300

AN ANTIQUE DIAMOND HEART BROOCH, CIRCA 1900 in yellow gold and silver, designed as a heart, set with old cut diamonds, no assay marks, 2.5cm, 4.5g.

Estimate £1,000 - £1,500

AN ANTIQUE VICTORIAN DIAMOND AND PEARL CRESCENT MOON BROOCH in yellow gold and silver, designed as a crescent moon set with alternating pearls and pairs of rose cut diamonds, no assay marks, 6.2cm, 5.9g. 

Estimate £1,500 - £2,500

A VINTAGE EMERALD AND DIAMOND BAR BROOCH in 18ct white gold and platinum, set with alternating square and rectangular step cut emeralds and old cut diamonds, stamped 19ct PT, 6.9cm, 5.6g. 

Estimate £2,000 - £3,000

AN ANTIQUE DIAMOND STAR BROOCH / PENDANT in yellow gold and silver, designed as an eight rayed star, set to the centre with a cluster of old European cut diamonds, accented by further old European cut diamonds, the diamonds all totalling 5.5-6.0 cara

Estimate £5,000 - £7,000

AN ANTIQUE DENDRITIC AGATE BROOCH in yellow gold, set with an oval dendritic agate in a twisted gold frame, no assay marks, 2.0cm, 1.9g. 

Estimate £150 - £250

CROPP & FARR, A VINTAGE RUBY FISH BROOCH in 18ct yellow gold, set with a cabochon ruby eye, to textured scale detailing, signed C&F, full British import marks, stamped 750, 3.1cm, 6.4g.

Estimate £400 - £600

BOUCHERON, A VINTAGE DIAMOND AND ENAMEL FLOWER BROOCH, 1950S in 18ct white gold, designed as a flower, set to the centre with a cluster of round brilliant cut diamonds, the petals decorated with blue guilloche enamel, the stem and leaves set with rou

Estimate £10,000 - £15,000

A DIAMOND BROOCH in white gold, the radiating body set with a cluster of old cut diamonds, accented by a fringe of further old cut diamonds, the diamonds all totalling 3.2-3.5 carats, stamped DESPOSE, 3.8cm, 15.2g. 

Estimate £2,500 - £3,500

A FRENCH ART DECO DIAMOND BAR BROOCH in platinum, set with old cut diamonds over a pierced design, the diamonds totalling 1.8-2.0 carats, French assay marks, 6.8cm, 8.9g.

Estimate £2,500 - £3,500

AN ANTIQUE ENAMEL, RUBY AND DIAMOND BROOCH, 19TH CENTURY in yellow gold and silver, the oval body set to the centre with an old cut diamond on a ground of light blue guilloche enamel within a foliate frame set with round cut rubies and old and rose c

Estimate £1,000 - £1,500

A VINTAGE SAPPHIRE AND DIAMOND CLUSTER BAR BROOCH in white gold, set with a round cut sapphire of approximately 0.49 carats in a cluster of old mine cut diamonds, no assay marks, 6.2cm, 5.5g.

Estimate £600 - £800

AN ANTIQUE AMETHYST AND ENAMEL CAMEO BROOCH, 19TH CENTURY in yellow gold, set with a carved amethyst cameo depicting the bust of a classical woman, in a border or black and white enamel, no assay marks, 4.5cm, 24.4g.

Estimate £1,500 - £2,500

AN ANTIQUE CONCH SHELL AND PEARL CAMEO BROOCH / PENDANT in 10ct yellow gold, set with a conch shell cameo carved to depict a classical woman in profile, in a border of seed pearls and floral detailing, stamped 10K, 3.8cm, 7.7g.

Estimate £400 - £600

AN ANTIQUE NATURAL PEARL, SAPPHIRE, RUBY AND DIAMOND SPIDER BROOCH in yellow gold, designed as a spider, the body set with a natural pearl and a round cut sapphire, round cut rubies to the eyes, the legs set with rose cut sapphires, no assay marks, 5

Estimate £3,000 - £5,000

AN ANTIQUE CITRINE AND GARNET PINEAPPLE BROOCH set with a rose cut garnet and an oval shaped rose cut citrine, no assay marks, 3.0cm, 4.7g. 

Estimate £200 - £300

A RETRO PEARL BROOCH in 14ct yellow gold, the abstract brooch set with three pearls to the centre, stamped K14, 5.7cm, 11.0g. 

Estimate £300 - £500

A VINTAGE PASTE CLIP BROOCH the fan shaped brooch set throughout with round and baguette cut paste stones, no assay marks, 5.5cm, 19.4g. 

Estimate £100 - £150

AN ANTIQUE DIAMOND BROOCH / PENDANT in yellow gold and silver, the brooch in floral design set throughout with old cut diamonds, the diamonds all totalling 8.0-10.0 carats, no assay marks, 5.7cm, 23.0g. 

Estimate £10,000 - £15,000

AN ANTIQUE DIAMOND FLOWER BROOCH in yellow gold and silver, designed as a flower with an articulated head, set throughout with old and rose cut diamonds, no assay marks, 4.8cm, 16.0g. 

Estimate £2,000 - £3,000

BUCCELLATI, A DIAMOND BROOCH in 18ct yellow gold and silver, the oval domed body set with nine round brilliant cut diamonds accented by rose cut diamonds, the diamonds all totalling 3.0-3.5 carats, signed Buccellati, French import marks, 3.5cm, 7.9g.

Estimate £6,000 - £8,000

AN ANTIQUE PEARL AND DIAMOND STAR BROOCH / PENDANT in yellow gold and silver, designed as a stylised star set with a pearl of 5.7mm accented by old and rose cut diamonds, detachable brooch fittings, no assay marks, 2.5cm, 6.6g.

Estimate £800 - £1,200

VAN CLEEF & ARPELS, A MOTHER OF PEARL AND DIAMOND BUTTERFLY BROOCH in white gold, designed as a butterfly set with mother of pearl, accented by a row of round brilliant cut diamonds, signed Van Cleef & Arpels and numbered, stamped 750, 4.9cm, 21.7g. 

Estimate £5,000 - £7,000

A VINTAGE ONYX AND DIAMOND BOW BROOCH designed as an openwork bow set with round and rose cut diamonds, accented by calibre cut onyx, no assay marks, 5.0cm, 9.2g. 

Estimate £1,000 - £1,500

AN ANTIQUE TURQUOISE AND DIAMOND BROOCH in yellow gold and silver, the scrolling body set with rose cut diamonds, suspending a turquoise drop, French import marks, 3.7cm, 7.7g.

Estimate £800 - £1,200

AN ANTIQUE PEARL CRESCENT BROOCH in 18ct yellow gold, set throughout with seed pearls, stamped SS 18, 4.6cm, 3.0g.

Estimate £150 - £250

AN ANTIQUE DIAMOND BROOCH in yellow gold and silver, in scrolling design set throughout with old cut, single and rose cut diamonds, the diamonds all totalling 2.8-3.0 carats, no assay marks, 5.7cm, 21.9g. 

Estimate £2,500 - £3,500

A NATURAL PEARL AND DIAMOND BAR BROOCH set with a natural pearl of 8.9mm in a cluster of old cut diamonds, each end terminating with an old cut diamond, no assay marks, 4.4cm, 4.6g. 

Estimate £2,000 - £3,000

A DIAMOND AND RUBY CAT BROOCH in 18ct white gold, the body of the cat pave set with round cut white and black diamonds, the eyes set with round cut rubies, stamped 750, 3.0cm, 9.0g. 

Estimate £1,500 - £2,500

AN ANTIQUE TURQUOISE LOCKET / BROOCH the oval body set with a cluster of cabochon turquoise accented by beaded and twisted wirework, with a glass covered locket panel to the reverse, no assay marks, 3.5cm, 9.9g. 

Estimate £300 - £500

AN ANTIQUE RUBY AND DIAMOND CRESCENT MOON BAR BROOCH in yellow gold and silver, designed as a crescent moon set with round cut rubies and old mine cut diamonds, with a central cluster of old mine cut diamonds, the bar terminated by old mine cut diamo

Estimate £1,000 - £1,500

A DIAMOND PLAQUE BROOCH in 14ct white gold, the geometric body set with old European cut diamonds totalling 1.5-1.7 carats, stamped 585, 3.5cm, 6.8g. 

Estimate £1,500 - £2,500

AN AMETHYST AND PEARL BROOCH in yellow gold and silver, set with an oval cut amethyst in a border of pearls, no assay marks, 3.0cm, 10.1g. 

Estimate £400 - £600