A BOULDER OPAL AND SAPPHIRE BROOCH / PENDANT in yellow gold, the abstract brooch / pendant set with a fancy shaped boulder opal and a cabochon sapphire, no assay marks, 6.3cm, 11.7g. 

Estimate £600 - £800

MIKIMOTO, AN AKOYA PEARL STARBURST BROOCH in 14ct yellow gold, the abstract brooch set with seven pearls, maker's mark, stamped 14k, 5.3cm, 8.3g. 

Estimate £300 - £500

A MODERNIST RUBY AND DIAMOND BROOCH in 9ct yellow gold, designed as a stylised coral set with trios of round brilliant cut diamonds and round cut rubies, no assay marks, 5.0cm, 21.0g. 

Estimate £500 - £700

AN ANTIQUE VICTORIAN CARNELIAN, DIAMOND AND PEARL CAMEO BROOCH in 18ct yellow gold, set with a kite shaped carnelian cameo depicting a classical woman in an ornate frame decorated with rose gold and silver rose motifs, old cut diamonds, and pearls, s

Estimate £700 - £900

AN ANTIQUE DIAMOND FLOWER BROOCH in yellow gold and silver, designed as an articulated flower, set throughout with old and rose cut diamonds all totalling 3.5-4.0 carats, the principal diamond weighing approximately 0.95 carats, no assay marks, 3.5cm

Estimate £4,000 - £6,000

A VINTAGE SAPPHIRE AND DIAMOND DOG BROOCH in 18ct yellow gold, designed as a dog, the eye set with a round cut sapphire, the collar set with single cut diamonds, full British hallmarks for London 1966, 4.4cm, 21.0g. 

Estimate £1,200 - £1,600

A DIAMOND SPRAY BROOCH in platinum, designed as an abstract floral spray set with round brilliant, marquise and baguette cut diamonds, the diamonds all totalling 6.0-6.5 carats, no assay marks, 4.4cm, 18.4g. 

Estimate £6,000 - £8,000

AN ANTIQUE DIAMOND LOCKET BROOCH in yellow gold, set with an old cut diamond in an engraved star border, accented by beadwork, with a glass covered locket to the reverse, no assay marks, 5.3cm, 10.4g. 

Estimate £250 - £350

AN ANTIQUE HAWK'S EYE, PEARL AND GARNET BUG BAR BROOCH in yellow gold, the body set with a cabochon hawk's eye, seed pearls and cabochon garnet eyes, terminating with a pearl, no assay marks, 4.8cm, 4.2g. 

Estimate £800 - £1,200

AN ANTIQUE BANDED AGATE AND SEED PEARL BROOCH in yellow gold, set with a banded agate cameo depicting the bust of a classical lady, in a border of seed pearls, no assay marks, 2.0cm, 5.9g. 

Estimate £300 - £500

A DIAMOND CLOVER BROOCH in 14ct white and yellow gold, designed as a four leaf clover, set to the centre with an old cut fancy yellow diamond of approximately 0.80 carats, each leaf pave set with round brilliant cut diamonds, the stem set with baguet

Estimate £5,000 - £7,000

A DIAMOND FLY BROOCH in 18ct yellow and white gold, designed as a fly, the body set throughout with round brilliant cut diamonds, the eyes set with faceted rubies, no assay marks, 2.2cm, 6.4g. 

Estimate £1,500 - £2,500

AN ANTIQUE VICTORIAN GARNET MOURNING BROOCH designed as an interlocking knot, set with oval and round cut garnets and accented by twisted wirework, with a small glass locket containing hairwork to the reverse, no assay marks, 5.5cm, 15.8g. 

Estimate £600 - £800

A DIAMOND AND SAPPHIRE BROOCH in a stylised geometric design, set throughout with round brilliant cut diamonds, oval cut sapphires, and baguette cut sapphires, the diamonds totalling 6.5-7.0 carats, the sapphires totalling 6.5-7.0 carats, no assay ma

Estimate £4,000 - £6,000

AN ANTIQUE SHELL CAMEO BROOCH set with a shell cameo carved to depict The Three Graces, no assay marks, 5.0cm, 10.1g. 

Estimate £100 - £150

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

AN ANTIQUE GREEN TOURMALINE AND SEED PEARL BROOCH in yellow gold, set with a cushion cut green tourmaline in an openwork border set with seed pearls, no assay marks, 2.7cm, 6.1g. 

Estimate £300 - £500

AN AMBER BROOCH in 14ct yellow gold, set with a cabochon amber, stamped 585, 3.0cm, 9.3g. 

Estimate £150 - £250

A FRENCH DIAMOND DOUBLE CLIP BROOCH in platinum, the openwork scrolling brooch set throughout with single and old cut diamonds, detachable from frame to form two clip brooches, French assay marks, 5.5cm, 22.7g. 

Estimate £2,500 - £3,500

A SYNTHETIC RUBY AND DIAMOND SPRAY BROOCH in 14ct yellow gold, set to the centre with an oval cut synthetic ruby in a border of round brilliant cut diamonds, accented radiating spokes set with baguette cut diamonds and round cut rubies, no assay mark

Estimate £1,000 - £1,500

A DIAMOND FLOWER BROOCH in 18ct yellow and white gold, designed as two flowers and three leaves pave set throughout with round brilliant cut diamonds, the diamonds totalling 18.0-19.0 carats, no assay marks, 5.4cm, 41.1g. 

Estimate £15,000 - £25,000

NO RESERVE - AN EMERALD BROOCH in 18ct yellow gold, designed as an Aztec figure, set with a rectangular step cut emerald, stamped 18K, 4.1cm, 3.8g. 

Estimate £150 - £250

A RETRO RUBY AND DIAMOND FLOWER BROOCH in tricolour gold, designed as a bouquet of flowers tied together with a diamond set ribbon, the flowers accented by round cut rubies and round brilliant cut diamonds, no assay marks, 7.0cm, 30.4g. 

Estimate £1,200 - £1,600

A DIAMOND LEAF BROOCH in 18ct yellow and white gold, designed as a leaf shaped spray of round brilliant cut diamonds, surrounded by a detachable yellow gold frame, no assay marks, 6.3cm, 23.3g. 

Estimate £5,000 - £7,000

A DIAMOND BROOCH in platinum, designed as an open circle set with graduating round brilliant cut diamonds, accented by marquise cut diamonds and baguette cut diamonds, the diamonds all totalling 1.5-2.0 carats, no assay marks, 2.9cm, 7.4g. 

Estimate £1,500 - £2,500

A RETRO DIAMOND BROOCH in rose and white gold, the stylised scrolling brooch set with a row of graduating baguette cut diamonds, accented by round brilliant cut diamonds, the diamonds all totalling 3.0-3.5 carats, no assay marks, 8.5cm, 39.1g. 

Estimate £2,500 - £3,500

A CORAL CAMEO BROOCH / PENDANT AND CHARM in 18ct yellow gold, the brooch / pendant set with a coral cameo carved to depict the bust of a woman, stamped 750, partial British hallmarks, 3.5cm, 15.0g, accompanied by a small cameo pendant / charm in 9ct

Estimate £400 - £600

A DIAMOND FLOWER BROOCH in 18ct yellow and white gold, designed as a rose, the petals and leaves set with round brilliant cut diamonds, the diamonds all totalling 6.0-6.5 carats, stamped 18K, 5.9cm, 27.1g. 

Estimate £5,000 - £7,000

A RETRO RUBY AND DIAMOND DOUBLE CLIP BROOCH in 14ct rose gold, the scrolling body set with round cut rubies and round brilliant cut diamonds, the two clips detachable from the frame as a pair of clip brooches, the rubies all totalling 1.2-1.5 carats,

Estimate £1,000 - £1,500

A DIAMOND THREE STONE BAR BROOCH in 15ct white gold, set to the centre three old cut diamonds within an openwork kite shape, stamped 15ct, 5.9cm, 3.7g.

Estimate £300 - £500