TIFFANY & CO., A TURQUOISE AND RUBY MOUSE BROOCH designed as a textured mouse grasping a cabochon turquoise, the eyes set with round cut rubies, signed Tiffany & Co., stamped 18K, 3.5cm, 14.5g. 

Estimate £2,000 - £3,000

BULGARI, A RUBY AND ROCK CRYSTAL MONETE BROOCH set with an ancient Greek coin of Alexander the Great, accented by carved frosted rock crystal and oval cabochon rubies, signed Bulgari and numbered, stamped 750, 3.2cm, 20.1g. 

Estimate £5,000 - £7,000

AN ART DECO ROCK CRYSTAL, DIAMOND, SAPPHIRE AND ONYX BROOCH set with faceted rock crystal, accented by single cut diamonds, cabochon sapphires and polished onyx, no assay marks, 6.1cm, 10.3g. 

Estimate £3,000 - £5,000

VAN CLEEF & ARPELS, A DIAMOND AND ENAMEL PANDA BROOCH in 18ct yellow gold, designed as a panda pave set with round brilliant cut diamonds, relieved in black enamel, signed VCA and numbered, French assay marks, stamped 750, 2.9cm, 18.0g. 

Estimate £6,000 - £8,000

AN AUSTRIAN NEPHRITE JADE, ROCK CRYSTAL AND DIAMOND LILY OF THE VALLEY BROOCH in 18ct yellow gold, the leaf comprising carved nephrite, the ten carved frosted rock crystal flowers accented by round brilliant cut diamond drops, Austrian assay marks, s

Estimate £1,000 - £1,500

VAN CLEEF & ARPELS, A CORAL AND PEARL ENVELOPE BROOCH in 18ct yellow gold, designed as an envelope set with a pear shaped cabochon coral and pearls, signed VCA and numbered, French assay mark, stamped OR750, 1.8cm, 4.2g. 

Estimate £600 - £800

A DIAMOND, EMERALD, SAPPHIRE AND PLIQUE A JOUR ENAMEL DRAGONFLY BROOCH the body set with a row of single cut diamonds, the eyes set with oval cabochon emeralds, the wings decorated with blue and green plique a jour enamel accented by round cabochon s

Estimate £6,000 - £8,000

JULIETTE MOUTARD FOR RENE BOIVIN, A RARE RETRO DIAMOND STARFISH BROOCH, C. 1940, in 18ct yellow gold, designed as a starfish set throughout with old cut diamonds, the diamonds all totalling 6.0-6.5 carats, Rene Boivin maker's mark, French assay marks

Estimate £40,000 - £60,000

JUNICHI HAKOSE FOR VAN CLEEF & ARPELS, A RARE LIMITED EDITION MOTHER OF PEARL, LACQUER AND DIAMOND 'LACQUERED BUTTERFLIES' BROOCH in 18ct white gold, designed as a butterfly set with round brilliant cut diamonds, the wings set with mother of pearl, w

Estimate £6,000 - £8,000

CARTIER, A DIAMOND AND EMERALD DOG BROOCH designed as a dog set throughout with round brilliant cut diamonds, the eye set with a round cabochon emerald, the diamonds all totalling 4.0-4.5 carats, signed Cartier, no assay marks, 5.8cm, 14.4g. Accompan

Estimate £20,000 - £25,000

AN ANTIQUE PEARL, DIAMOND AND ENAMEL BROOCH in yellow gold, designed as a scrolling ribbon relieved in orange, green and white enamel, accented by pearls and rose cut diamonds, no assay marks, 6.6cm, 28.4g. 

Estimate £1,200 - £1,600

BUCCELLATI, A DIAMOND LEAF BROOCH designed as a leaf set throughout with old European and single cut diamonds, the diamonds all totalling 6.0-7.0 carats, signed M. Buccellati, stamped K18, 6.0cm, 16.9g. 

Estimate £12,000 - £16,000

BOUCHERON, A CHRYSOPRASE, CORAL AND DIAMOND CAT BROOCH in 18ct yellow gold, designed as a cat set with round brilliant cut diamonds, the eyes set with marquise shaped cabochon chrysoprase, the nose set with polished coral, signed Boucheron Paris, Fre

Estimate £7,000 - £9,000

A SAPPHIRE, RUBY AND DIAMOND BUTTERFLY BROOCH the body set with an oval cut sapphire and round brilliant cut diamonds, the wings set with oval cut sapphires and rubies, stamped 14K, 5.0cm, 29.9g. 

Estimate £2,000 - £3,000

VAN CLEEF & ARPELS, A DIAMOND AND ENAMEL FROG BROOCH in 18ct yellow and white gold, designed as a frog decorated with green enamel, the eyes set with round brilliant cut diamonds, signed VCA and numbered, French assay marks, stamped 750, 3.4cm, 13.4g

Estimate £6,000 - £8,000

AN AQUAMARINE AND DIAMOND BROOCH / PENDANT the foliate body set to the centre with a fancy cut aquamarine of approximately 6.80 carats, accented throughout with round brilliant and single cut diamonds, the diamonds all totalling 5.5-6.0 carats, no as

Estimate £2,000 - £3,000

A GEMSET SAFETY PIN BROOCH designed as a functioning safety pin accented by single cut diamonds, with detachable accents set variously with sapphires, emeralds and diamonds, stamped 18K 750, 4.5cm, 11.5g. 

Estimate £1,000 - £1,500

AN ANTIQUE BURMA NO HEAT SAPPHIRE AND DIAMOND BROOCH in yellow gold, the diamond shaped brooch set to the centre with a cabochon sapphire of approximately 2.06 carats, accented by old and rose cut diamonds and four further cabochon sapphires, no assa

Estimate £3,500 - £4,500

AN ANTIQUE TURQUOISE AND PEARL SWALLOW BROOCH in yellow gold, designed as two swallows connected by a chain accented with pearls and turquoise, no assay marks, up to 13.5cm, 7.6g. 

Estimate £1,200 - £1,600

A FRENCH TOPAZ CLUSTER BROOCH in 18ct yellow gold, set with a cluster of oval cut topaz, French assay marks, 3.0cm, 14.2g. 

Estimate £6,000 - £8,000

AN AQUAMARINE AND DIAMOND PLAQUE BROOCH the openwork plaque set throughout with round brilliant, old European, baguette and octagonal step cut diamonds, the diamonds all totalling 6.0-7.0 carats, accented by three round cut aquamarines, no assay mark

Estimate £4,000 - £6,000

A RETRO DIAMOND AND RUBY FLOWER BROOCH in yellow gold, designed as two flowers tied with a ribbon, set with round brilliant and old cut diamonds, accented by calibre cut rubies, no assay marks, 8.0cm, 25.3g. 

Estimate £1,500 - £2,500

A COLOUR CHANGE CEYLON NO HEAT SAPPHIRE, RUBY, EMERALD AND DIAMOND BROOCH / PENDANT designed as a cross set with five cushion cut colour change sapphires, the sapphires all totalling approximately 33.35 carats, accented by round cut rubies, emeralds

Estimate £20,000 - £25,000

A TSAVORITE GARNET AND DIAMOND PEACOCK BROOCH designed as a peacock set throughout with round cut tsavorite garnets and old cut diamonds, the diamonds all totalling 2.0-2.5 carats, no assay marks, 4.9cm, 17.4g. 

Estimate £4,000 - £6,000

AN ANTIQUE DIAMOND AND PEARL HEART BROOCH in yellow gold and silver, comprising a foliate motif set with old and rose cut diamonds, in a heart shaped border of pearls, no assay marks, 2.1cm, 4.1g. 

Estimate £600 - £800

A JADEITE JADE AND DIAMOND BROOCH designed as a bar with a heart motif set with round cut diamonds, suspending seven rows of round brilliant cut yellow and white diamonds, terminating with jadeite jade drops carved to depict various animals including

Estimate £3,000 - £5,000