CARTIER, A TURQUOISE AND SAPPHIRE FLOWER BROOCH, 1958 in 18ct yellow gold, designed as a flower set with a cabochon turquoise in a cluster of round cabochon sapphires, full British hallmarks for London 1958, 6.2cm, 16.9g. Accompanied by the original

Estimate £5,000 - £7,000

TIFFANY & CO., A DIAMOND CIRCLE BROOCH, 1940S in platinum, designed as an open circle set throughout with old European cut diamonds, the diamonds all totalling 4.3-4.5 carats, signed Tiffany & Co., no assay marks, 4.3cm, 7.2g. 

Estimate £3,000 - £5,000

A CORAL, ONYX AND DIAMOND BROOCH in white gold, the geometric brooch set throughout with round brilliant cut diamonds, accented by polished onyx and cabochon coral in foliate design, no assay marks, 4.2cm, 9.3g. 

Estimate £2,000 - £3,000

AN AUSTRIAN NEPHRITE JADE, CORAL AND DIAMOND WINTERBERRY HOLLY BROOCH in platinum, designed as a sprig of winterberry holly, comprising carved nephrite jade leaves and polished coral berries, the stem accented by round brilliant cut diamonds, Austria

Estimate £1,500 - £2,500

VAN CLEEF & ARPELS, A VINTAGE RUBY AND SAPPHIRE BICYCLE BROOCH in 18ct yellow gold, designed as a lady riding a bicycle, her bag billowing behind her, the bicycle set with a round cut ruby and sapphire, signed Van Cleef & Arpels and numbered, French

Estimate £3,000 - £5,000

VAN CLEEF & ARPELS, A PAIR OF DIAMOND LEAF BROOCHES in 18ct yellow and white gold, each designed as an openwork leaf, accented by a row of round brilliant cut diamonds, the smaller brooch with a pendant fitting, signed Van Cleef & Arpels, French assa

Estimate £5,000 - £7,000

A MODERNIST DIAMOND BROOCH / PENDANT, 1970S in 18ct yellow gold, the textured body set with an old European cut diamond of approximately 1.85 carats in a surround of further old European cut diamonds, the diamonds all totalling 9.0-9.5 carats, no ass

Estimate £8,000 - £12,000

A FINE ART DECO DIAMOND BROOCH in platinum, the openwork oval shaped body set throughout with old cut diamonds, the three principal diamonds weighing approximately 0.50, 1.00, and 0.50 carats, the diamonds all totalling 7.0-8.0 carats, no assay marks

Estimate £8,000 - £12,000

BEN ROSENFELD, A DIAMOND AND RUBY FLOWER BROOCH, 1960S in 18ct yellow gold, designed as a stylised flower set with a cluster of round cut rubies and accented by round brilliant cut diamonds, the rubies totalling 2.2-2.5 carats, signed BR LTD., full B

Estimate £1,800 - £2,200

TIFFANY & CO., A VINTAGE STARFISH BROOCH, 1970S in 18ct yellow gold, designed as a textured starfish accented by gold beadwork, signed Tiffany & Co., stamped 750, 6.5cm, 41.1g.

Estimate £3,500 - £4,500

CARTIER, A DIAMOND LEAF BROOCH in 18ct yellow gold, designed as three leaves accented by a cluster of old European cut diamonds, the diamonds all totalling 3.0-3.5 carats, signed Cartier and numbered, no assay marks, 4.1cm, 18.6g. 

Estimate £6,000 - £8,000

HERMES, A GOLD FEATHER BROOCH in 18ct yellow gold, designed as a feather, signed Hermes Paris and numbered, French assay marks, 6.4cm, 10.1g. 

Estimate £1,500 - £2,500

CARTIER, A TUTTI FRUTTI BURMA NO HEAT RUBY, EMERALD, SAPPHIRE AND DIAMOND BROOCH in 18ct yellow gold and platinum, designed as a stylised leaf, set with an oval cut ruby of approximately 1.39 carats, cushion cut emeralds and oval and round cut sapphi

Estimate £20,000 - £30,000

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 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 OPAL AND DIAMOND BROOCH in yellow gold and silver, the scrolling brooch set throughout with old cut diamonds, set with a pear shaped cabochon opal in a cluster of rose cut diamonds, the diamonds all totalling 4.0-5.0 carats, no assay marks

Estimate £1,500 - £2,500

AN ANTIQUE DEMANTOID GARNET, DIAMOND AND RUBY LIZARD BROOCH in yellow gold, designed as a lizard set with rows of round cut demantoid garnets accented by old cut diamonds, the eyes set with round cabochon rubies, no assay marks, 5.1cm, 5.9g. 

Estimate £3,000 - £5,000

NARDI, A GEMSET BLACKAMOOR BROOCH in 18ct yellow gold, designed as the bust of a Blackamoor, the face carved from ebony, the turban set with cabochon turquoise and a rose cut garnet, the robes set with further turquoise, rubies and pearls, signed NAR

Estimate £2,500 - £3,500

CHAUMET, AN ANTIQUE ART DECO ONYX, DIAMOND AND ENAMEL JABOT PIN BROOCH in 18ct yellow and white gold and platinum, comprising a black enamel disc suspending a bail set with round cut diamonds, accented by further round and rose cut diamonds, the othe

Estimate £4,000 - £6,000

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

AN IMPORTANT ANTIQUE ART DECO NATURAL SALTWATER PEARL AND DIAMOND BROOCH in platinum and yellow gold, the navette shaped brooch set with a pearl of 12.0mm, accented throughout with old cut diamonds, the two principal diamonds weighing approximately 2

Estimate £25,000 - £35,000

A FINE DIAMOND BELL FLOWER BROOCH in platinum, designed as a bell flower set throughout with round brilliant and baguette cut diamonds, suspending an articulated spray of marquise cut diamonds, the marquise cut diamonds totalling 8.5-9.5 carats, the

Estimate £20,000 - £30,000

A CORAL AND DIAMOND FLOWER BROOCH in 18ct yellow gold, designed as a flower set with cabochon pale pink coral, accented by round brilliant cut diamonds, stamped CR18K, 3.3cm, 19.7g. 

Estimate £2,000 - £3,000

VAN CLEEF & ARPELS, AN EXQUISITE ART DECO DIAMOND BROOCH, CIRCA 1936 in platinum, in scrolling design, set with transitional and baguette cut diamonds, the diamonds all totalling 7.0-8.0 carats, apparently unsigned, French assay marks, 4.9cm, 15.4g.

Estimate £15,000 - £20,000

A DIAMOND BROOCH in 18ct white gold, the stylised brooch set to the centre with a round brilliant cut diamond of approximately 1.85 carats, accented by pairs of round brilliant cut diamonds, within a frame of single and baguette cut diamonds, the dia

Estimate £4,000 - £6,000

AN ENAMEL AND DIAMOND TOUCAN BROOCH in 18ct yellow gold, designed as a toucan on a branch, the beak relieved in red and black enamel, the body set with round brilliant cut diamonds, accented by green enamel leaves, stamped 750, 6.5cm, 36.0g. 

Estimate £4,000 - £6,000

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

AN EXCEPTIONAL ANTIQUE RUSSIAN NATURAL SALTWATER PEARL AND DIAMOND BROOCH in 56 zolotnik gold and silver, the scrolling foliate pendant set throughout with old and rose cut diamonds, suspending articulated briolette cut diamond drops, terminating in

Estimate £100,000 - £150,000

BUCCELLATI, AN IMPORTANT AND EARLY DIAMOND BROOCH, 1930s in platinum, set with a principal old European cut diamond of approximately 1.10 carats, the openwork lattice body set throughout with old and rose cut diamonds, signed Buccellati, no assay mar

Estimate £25,000 - £35,000

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

AN ANTIQUE DIAMOND BOW BROOCH in yellow gold and silver, designed as a bow set with old and rose cut diamonds suspending a briolette cut diamond drop of approximately 2.60 carats, no assay marks, 2.9cm, 4.8g. 

Estimate £4,000 - £6,000

A DIAMOND SALAMANDER BROOCH in 18ct white gold, designed as a salamander pave set throughout with round brilliant cut diamonds, the diamonds all totalling 1.8-2.2 carats, stamped 18K, 5.9cm, 7.9g. 

Estimate £2,000 - £3,000