AN AMETHYST GEODE, DIAMOND AND PEARL BROOCH in 18ct yellow gold, set with an amethyst geode slice accented by round cut diamonds and pearls, partial British hallmarks, 5.6cm, 32.3g. 

Estimate £800 - £1,200

AN ANTIQUE DIAMOND BROOCH / PENDANT in yellow gold and silver, set throughout with rose cut diamonds, no assay marks, 5.3cm, 12.2g.

Estimate £1,500 - £2,000

AN ANTIQUE VICTORIAN PINK TOPAZ SNAKE BROOCH in yellow gold, designed as two coiled snakes set with pear shaped pink topaz, the eyes accented by emeralds, the topaz estimated to total 12.0-14.0 carats, no assay marks, 5.7cm, 22.5g. 

Estimate £6,000 - £8,000

A RUBY HIPPOPOTAMUS BROOCH in 9ct yellow gold, designed as a hippopotamus with ruby eyes, H G maker's mark, full British hallmarks, 4.0cm, 16.3g. 

Estimate £500 - £700

AN ANTIQUE DIAMOND FLORAL SPRAY BROOCH in yellow gold and silver, designed as a floral spray set throughout with rose cut diamonds, the diamonds all totalling 3.0-4.0 carats, no assay marks, 5.6cm, 11.9g. 

Estimate £300 - £500

A MODERNIST GEMSET BROOCH in 18ct yellow gold, the rectangular openwork brooch set with cabochon moonstones, green tourmaline, amethyst, sapphire, star ruby and emerald, accented by a rectangular step cut green tourmaline, a rutilated quartz and roun

Estimate £1,000 - £1,500

AN EMERALD TOAD BROOCH in 18ct yellow gold, designed as a toad covered with white gold beads, the eyes set with cabochon emeralds, stamped 750, 5.5cm, 24.8g. 

Estimate £1,500 - £2,500

A FINE ANTIQUE DIAMOND CORONET BROOCH in yellow gold, designed as a coronet set throughout with old and rose cut diamonds, the diamonds all totalling 1.8-2.0 carats, no assay marks, 2.6cm, 4.2g. 

Estimate £2,000 - £3,000

A RUBY AND DIAMOND BAR BROOCH in white gold, set with a row of oval cut rubies, accented by pairs of old cut diamonds, the rubies all totalling 3.1-3.3 carats, no assay marks, 5.4cm, 5.2g.

Estimate £500 - £700

AN ANTIQUE ROYAL EMPEROR WILLIAM I OF GERMANY CYPHER BROOCH in yellow gold, designed as the WRI cypher of Emperor William I of Germany relieved in blue and red enamel, surmounted by the German State Crown, in a scrolling border set with round cut rub

Estimate £1,000 - £1,500

AN ANTIQUE OPAL AND DIAMOND CRESCENT MOON BROOCH in yellow gold, designed as a crescent moon set with cabochon opals, accented by rose cut diamonds, marked indistinctly, 2.1cm, 3.1g. 

Estimate £500 - £700

AN EMERALD AND DIAMOND CIRCLE BROOCH in white gold, designed as three interlocking circles, set with round cut diamonds and calibre cut emeralds, no assay marks, 3.0cm, 4.6g. 

Estimate £600 - £800

AN ANTIQUE DIAMOND AND PEARL HORSESHOE BROOCH in yellow gold, designed as two horseshoe motifs set with old cut diamonds and pearls, accented by further pearls, no assay marks, 3.6cm, 3.3g. 

Estimate £250 - £350

AN ANTIQUE ART DECO AGATE, DIAMOND AND SAPPHIRE FOX TERRIER BROOCH in platinum, comprising a finely carved agate fox terrier head set with onyx eyes and nose, in a frame of single cut diamonds and calibre cut sapphires, the dog's collar set with furt

Estimate £2,500 - £3,500

A FINE ANTIQUE RUBY AND DIAMOND SNAKE BROOCH in yellow gold, designed as a coiled engraved snake, the head set with a cushion cut ruby and an old cut diamond, the eyes set with cabochon rubies, no assay marks, 3.5cm, 9.1g. 

Estimate £800 - £1,200

AN ANTIQUE DIAMOND EN TREMBLANT FLORAL SPRAY BROOCH in yellow gold and silver, designed as a floral spray, the main flower set en tremblant, set throughout with rose cut diamonds, no assay marks, 6.0cm, 13.9g.

Estimate £2,000 - £3,000

A FINE ANTIQUE PERIDOT AND DIAMOND BROOCH in yellow gold and silver, set with an octagonal step cut peridot of approximately 18.22 carats, in a scrolling border set with old and rose cut diamonds, no assay marks, 3.9cm, 12.0g.

Estimate £3,000 - £5,000

A FINE ANTIQUE ROCK CRYSTAL, DIAMOND, PEARL AND ENAMEL SWEETHEART BROOCH in yellow gold, set with a polished rock crystal, with an applied sweetheart motif set with rose cut diamonds, in a border of red and white enamel accented by pearls, no assay m

Estimate £1,000 - £1,500

AN IMPORTANT ANTIQUE DIAMOND AND ENAMEL BROOCH, LATE 18TH CENTURY in yellow gold, set to the centre with a rose cut diamond on a ground of blue guilloche enamel accented by graduating rows of rose cut diamonds in a further border of rose cut diamonds

Estimate £25,000 - £35,000

AN ANTIQUE SPINEL, OPAL AND DIAMOND INSECT BROOCH in yellow gold and silver, designed as two winged insects connected by chain, set with cushion cut spinels, rose cut diamonds and cabochon opals, no assay marks, 6.5cm, 5.3g. 

Estimate £2,000 - £3,000

AN ANTIQUE DIAMOND AND ENAMEL BROOCH in yellow gold, designed as a bar terminating at each end with a club motif set with rose cut diamonds relieved in black enamel, suspending a circular pendant designed as a bird perched on a fence set with further

Estimate £1,200 - £1,600

AN ANTIQUE SAPPHIRE, PEARL AND DIAMOND HORSESHOE AND RIDING CROP BROOCH designed as a horseshoe set with oval cut sapphires, pearls and an old cut diamond, intersected by a riding crop, no assay marks, 4.4cm, 7.2g. 

Estimate £400 - £600

A RUBY, DEMANTOID GARNET, SAPPHIRE AND PEARL CROWN BROOCH in yellow gold and silver, designed as a crown set with round cut rubies, round cut demantoid garnets and a pearl, accented by bunting set with round cut sapphires, the bar accented by further

Estimate £400 - £600

AN ANTIQUE TOPAZ AND PEARL CLUSTER BROOCH in yellow gold, set with an oval cut yellow topaz of approximately 4.51 in a cluster of pearls, no assay marks, 3.1cm, 10.4g. 

Estimate £2,000 - £3,000

A FINE ANTIQUE DIAMOND SWALLOW BROOCH in silver and yellow gold, designed as three flying swallows set throughout with old cut diamonds, the eyes set with cabochon cut rubies, no assay marks, 5.1cm, 6.9g. 

Estimate £300 - £500

A DIAMOND BUTTERFLY BROOCH in 18ct white gold, designed as a butterfly pave set with round brilliant cut diamonds, the head set with a round brilliant cut diamond, stamped K18WG, 4.1cm, 10.4g. 

Estimate £500 - £700

A RUBY AND DIAMOND FLOWER BROOCH in yellow gold, designed as a flower set with a cluster of oval cut rubies, accented by round brilliant and baguette cut diamonds and further oval cut rubies, no assay marks, 6.3cm, 27.0g. 

Estimate £4,000 - £6,000

A FINE DIAMOND PLAQUE BROOCH set centrally with an old European cut diamond to an openwork body set with single cut and baguette cut diamonds, all totalling 7.0-7.5 carats, no assay marks, 7.4cm, 25.0g.

Estimate £4,000 - £6,000

A RUBY, SPINEL AND DIAMOND BAR BROOCH in white gold, set with a graduating row of cushion cut rubies and spinels, accented by pairs of old cut diamonds, no assay marks, 6.7cm, 5.1g. 

Estimate £600 - £800

AN ANTIQUE DIAMOND FLORAL SPRAY BROOCH in yellow gold and silver, designed as a floral spray, set throughout with old and rose cut diamonds, the diamonds all totalling 0.8-1.0 carats, no assay marks, 4.8cm, 6.1g.

Estimate £400 - £600

AN ANTIQUE RUBY, PEARL AND DIAMOND BROOCH in 18ct yellow gold, designed as an open circle set with square step cut rubies accented by pearls and rose cut diamonds, stamped 18ct, 2.5cm, 3.7g. 

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND PLAQUE BROOCH the openwork plaque brooch set to the centre with a round brilliant cut diamond, accented by rose cut diamonds and calibre cut sapphires, no assay marks, 4.8cm, 8.8g. 

Estimate £700 - £900

AN ANTIQUE PORTUGUESE TOPAZ GIRANDOLE BROOCH, CIRCA 1800 in silver, the ribbon and floral motifs set with round, cushion, step and pear cut topaz, suspending a detachable articulated pear shaped topaz cluster drop, no assay marks, 6.5cm, 34.8g.

Estimate £2,000 - £3,000

AN ANTIQUE EMERALD AND DIAMOND SNAKE BROOCH in yellow gold, designed as a snake coiled around itself, set with a row of old cut diamonds, the eyes set with round cabochon emeralds, suspending a heart shaped locket set with a diamond from its mouth, n

Estimate £800 - £1,200

AN ANTIQUE TURQUOISE AND DIAMOND BROOCH in yellow gold and silver, the openwork brooch designed as a stylised flower set with oval and marquise cabochon turquoise, accented by rose cut diamonds, no assay marks, 2.2cm, 4.4g. 

Estimate £250 - £350

AN ANTIQUE DIAMOND BROOCH in yellow gold and silver, designed as an open heart set to the centre with an old cut diamond of approximately 0.75 carats, surmounted by a bow set with further old cut diamonds, no assay marks, 3.2cm, 8.4g. 

Estimate £3,500 - £5,500

AN ANTIQUE GARNET, MOONSTONE AND DIAMOND INSECT BROOCH in yellow gold and silver, designed as a winged insect, the body set with a cushion cut garnet and a cabochon moonstone, the wings set with rose cut diamonds, no assay marks, 4.3cm, 9.6g. 

Estimate £1,500 - £2,500

AN ANTIQUE PEARL HARP BROOCH designed as a harp set with seed pearls, no assay marks, 3.9cm, 3.4g. 

Estimate £200 - £300

AN ANTIQUE RUBY AND DIAMOND GIARDINETTO BROOCH in yellow gold and silver, designed as a basket of flowers, set with rose cut diamonds and round cut rubies, inscribed 1649, no assay marks, 3.8cm, 9.8g.

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND NAVETTE BROOCH in yellow gold, the navette face set with an old cut diamond in a cluster of octagonal step cut emeralds and further old cut diamonds, no assay marks, 5.1cm, 6.1g. 

Estimate £800 - £1,200

AN ANTIQUE DIAMOND SPRAY BROOCH in yellow gold and silver, designed as a spray of foliage set throughout with rose cut diamonds, no assay marks, 4.5cm, 9.7g.

Estimate £500 - £700

AN ANTIQUE DIAMOND, PEARL AND ENAMEL SWORD BROOCH in yellow gold, designed as a sword set throughout with old cut diamonds and seed pearls, the hilt decorated with white enamel, no assay marks, 10.0cm, 7.4g.

Estimate £400 - £600

AN ANTIQUE DIAMOND, PEARL AND ENAMEL BROOCH in 9ct yellow gold and silver, in circular form decorared with blue and white enamel, set with old cut diamonds in a frame of further old cut diamonds and pearls, no assay marks, 2.8cm, 6.6g.

Estimate £1,200 - £1,600

AN ANTIQUE EGYPTIAN REVIVAL BROOCH in yellow gold, set a brown hardstone carved to depict a scarab, accented by wings and snake motifs, no assay marks, 5.6cm, 8.2g.

Estimate £400 - £600

AN ANTIQUE VICTORIAN DIAMOND, RUBY AND PEARL MONKEY BAR BROOCH in 9ct yellow gold and silver, designed as a monkey perched on a bar suspending another monkey from a chain, the monkeys set with rose cut diamonds and round cut ruby and rose cut diamond

Estimate £1,000 - £1,500

AN ANTIQUE SAPPHIRE AND DIAMOND BAR BROOCH in yellow gold, set with five cushion cut sapphires, accented by old cut diamonds, the sapphires all totalling 1.4-1.5 carats, no assay marks, 3.2cm, 3.5g.

Estimate £250 - £350

A JADEITE JADE BRACELET in white gold, set with a row of five oval jadeite jade plaques carved to depict foliage, no assay marks, 19.0cm, 11.7g.

Estimate £250 - £350

AN ANTIQUE OPAL AND DIAMOND BROOCH, 19TH CENTURY in yellow gold and silver, comprising a clover motif set with cabochon opals accented by a scrolling border set with old and rose cut diamonds and two further cabochon opals, no assay marks, 4.5cm, 6.4

Estimate £500 - £700

A BIRD CAMEO BROOCH in yellow gold, set with a shell cameo carved to depict an Australian kookaburra bird, marked indistinctly, 5.9cm, 17.1g. 

Estimate £600 - £800

AN ANTIQUE NATURAL SALTWATER PEARL AND DIAMOND BROOCH in yellow gold and silver, set with a row of five pearls accented by old cut diamonds, the pearls ranging from 5.0mm to 6.3mm, no assay marks, 4.2cm, 7.1g. Accompanied by a gemmological report sta

Estimate £1,200 - £1,600

AN ANTIQUE DIAMOND FLOWER BROOCH in yellow gold and silver, designed as a floral spray set throughout with old and rose cut diamonds, the diamonds all totalling 1.7-1.8 carats, no assay marks, 5.8cm, 7.5g. 

Estimate £600 - £800

AN ANTIQUE PERIDOT AND PEARL BAR BROOCH in yellow gold, set to the centre with an oval cut peridot of 6.08 carats, the bar-shaped brooch set throughout with seed pearls, no assay marks, 9.7cm, 10.5g. 

Estimate £500 - £700