AN ART DECO ROCK CRYSTAL, ONYX AND DIAMOND BROOCH set with an open oval of polished rock crystal, accented by calibre cut onyx and single cut diamonds, signed Cartier, no assay marks, 4.3cm, 12.3g.

Estimate £5,000 - £7,000

LACLOCHE, A CORAL, BLUE CHALCEDONY AND DIAMOND TOUCAN BROOCH in 18ct yellow gold, designed as a toucan set with a round cabochon coral and polished blue chalcedony, the eye set with a single cut diamond, signed J. LaCloche Paris, French assay marks,

Estimate £4,000 - £6,000

CARTIER, AN EMERALD DOLPHIN BROOCH in 18ct yellow gold, designed as a mother and baby dolphin swimming alongside each other, the eyes set with round cut emeralds, signed Cartier and numbered, French assay marks, 4.5cm, 19.4g. 

Estimate £3,000 - £5,000

TIFFANY & CO., A DIAMOND CIRCLE BROOCH designed as an open circle set with old cut diamonds, the diamonds all totalling 4.0-4.5 carats, stamped Tiffany & Co., no assay marks, 2.4cm, 7.6g. 

Estimate £4,000 - £6,000

AN ANTIQUE DIAMOND CLIP BROOCH in yellow gold and silver, set with a row of four rose cut diamonds, suspending a pear shaped rose cut diamond drop, no assay marks, 4.8cm, 4.8g. 

Estimate £5,000 - £7,000

VAN CLEEF & ARPELS, A FINE DIAMOND BROOCH, 1930S in platinum, the openwork brooch set throughout with transitional cut diamonds and accented by two rows of baguette cut diamonds, the diamonds all totalling 5.5-6.0 carats, signed Van Cleef Arpels Pari

Estimate £15,000 - £20,000

VAN CLEEF & ARPELS, A DIAMOND LA FLAMME BROOCH in platinum and white gold, designed as an abstract flame set with round brilliant cut diamonds, accented by a row of baguette cut diamonds, the diamonds all totalling 4.0-4.5 carats, signed Van Cleef &

Estimate £12,000 - £16,000

HERMES, A GOLD FEATHER CLIP BROOCH in 18ct yellow gold, designed as three entwined feathers, signed Hermes Paris, French assay marks, 4.5cm, 18.6g. 

Estimate £5,000 - £7,000

AN EMERALD AND DIAMOND BROOCH the openwork geometric brooch set with three principal octagonal step cut emeralds in a border of calibre cut emeralds, accented throughout with transitional cut diamonds and further step cut emeralds, no assay marks, 6.

Estimate £4,000 - £6,000

AN ANTIQUE DIAMOND AND RUBY MANDOLIN BROOCH in yellow gold and silver, designed as a mandolin set with rose cut diamonds and cushion cut rubies, no assay marks, 6.1cm, 14.5g. 

Estimate £2,000 - £3,000

AN ANTIQUE FRENCH DIAMOND, PEARL AND ENAMEL BROOCH / PENDANT in 18ct yellow gold, the openwork brooch set with rose cut diamonds and pearls, relieved in black enamel, suspending a detachable articulated fringe set with further rose cut diamonds and d

Estimate £7,000 - £9,000

CARTIER, A CITRINE AND DIAMOND FLOWER BROOCH in 18ct yellow gold, designed as a flower head set with pear and marquise cut citrines, accented by round brilliant cut diamonds, signed Cartier and numbered, JC maker's mark, French assay marks, 7.5cm, 33

Estimate £8,000 - £12,000

A BELLE EPOQUE OPAL, DIAMOND AND PEARL BROOCH the rectangular brooch set with a round cabochon opal in a border of old cut diamonds and pearls, the openwork body accented by further diamonds, no assay marks, 4.5cm, 10.8g. 

Estimate £2,000 - £3,000

A FRENCH DIAMOND PLAQUE  BROOCH in platinum, the openwork geometric brooch set to the centre with a transitional cut diamond of approximately 0.80 carats accented by baguette and bullet shaped diamonds, accented throughout with further transitional c

Estimate £5,000 - £7,000

VAN CLEEF & ARPELS, A DIAMOND, EMERALD AND ONYX LION EBOURIFFE BROOCH in yellow gold and platinum, designed as a lion cub, the eyes set with round cut emeralds, the nose set with polished onyx accented by round brilliant cut diamonds, signed Van Clee

Estimate £8,000 - £12,000

JEAN SCHLUMBERGER FOR TIFFANY & CO., A VINE LEAF BROOCH designed as three vine leaves, signed Tiffany & Co., signed Schlumberger Studios, stamped 750, 5.5cm, 22.3g. 

Estimate £2,000 - £3,000

HERMES, A GOLD BROOCH in 18ct yellow gold, designed as three interlocking circular motifs, signed Hermes Paris and numbered, French assay marks, 3.2cm, 10.2g.

Estimate £1,500 - £2,500

A DIAMOND BROOCH designed as a parallelogram set to the centre with a transitional cut diamond of approximately 0.57 carats, accented by three rows of transitional cut diamonds, the diamonds all totalling 5.0-5.5 carats, no assay marks, 6.0cm, 10.9g.

Estimate £2,500 - £3,500

AN ANTIQUE AMETHYST AND DIAMOND BROOCH in yellow gold and silver, set with a round cabochon amethyst in a border of old and rose cut diamonds, no assay marks, 3.5cm, 23.2g. 

Estimate £1,000 - £1,500

SUZANNE BELPERRON, AN AQUAMARINE, RUBY AND DIAMOND BROOCH, 1955-1970 in 18ct yellow gold, set with an octagonal step cut aquamarine of approximately 52.25 carats, accented by a spray of pear cut aquamarines, round cut rubies and old cut diamonds, the

Estimate £40,000 - £60,000

A PAIR OF DIAMOND CLIP BROOCHES each openwork clip in identical design, set throughout with single cut diamonds and accented by baguette cut diamonds, the diamonds all totalling 5.5-6.5 carats, no assay marks, 3.5cm each, total weight 27.0g. 

Estimate £5,000 - £7,000

A DIAMOND PLAQUE BROOCH the openwork geometric plaque brooch set with five principal old cut diamonds, accented throughout with further old and single cut diamonds, the principal diamond weighing approximately 1.11 carats, the diamonds all totalling

Estimate £5,000 - £7,000

VAN CLEEF & ARPELS, A DIAMOND ROSE BROOCH designed as a rose set throughout with round brilliant cut diamonds, the diamonds all totalling 5.5-6.0 carats, signed VCA and numbered, no assay marks, 5.5cm, 17.3g. 

Estimate £20,000 - £25,000

A TURQUOISE AND RUBY DOG BROOCH designed as a dog, the body set with an oval cabochon turquoise, the nose and eyes set with round cabochon rubies accented by round cut rubies, stamped 750, 4.5cm, 14.5g. 

Estimate £1,000 - £1,500

A DIAMOND AND ONYX JABOT PIN BROOCH terminating at each end with a double arrow head, set with polished onyx and round brilliant cut diamonds, the diamonds all totalling 2.8-3.0 carats, stamped 18K, 9.8cm, 24.4g. 

Estimate £2,500 - £3,500

A BELLE EPOQUE DIAMOND BROOCH the scrolling body set with single and old cut diamonds, suspending a garland set with further diamonds and two diamond drops, the principal diamond weighing approximately 0.68 carats, no assay marks, 4.2cm, 10.5g. 

Estimate £4,000 - £6,000

BULGARI, A FINE VINTAGE DIAMOND BROOCH the scrolling brooch set throughout with round brilliant and baguette cut diamonds, the diamonds all totalling 10.0-11.0 carats, signed Bulgari, no assay marks, 6.7cm, 27.9g. Accompanied by a Bulgari jewellery b

Estimate £10,000 - £15,000

A FINE ANTIQUE BELLE EPOQUE PINK SAPPHIRE AND DIAMOND BROOCH in yellow gold and silver, designed as a stylised bow set with an old cut diamond of 1.31 carats, accented by old and rose cut diamonds, suspending a cushion cut pink sapphire of 2.04 carat

Estimate £10,000 - £15,000

A SAPPHIRE, DIAMOND, EMERALD AND MOTHER OF PEARL BROOCH comprising a rectangular mother of pearl background set with a row of oval cabochon sapphires between rows of round cut emeralds, in a geometric frame of round brilliant cut diamonds, stamped 18

Estimate £4,000 - £6,000

AN ANTIQUE ART DECO FROSTED ROCK CRYSTAL AND DIAMOND BROOCH in platinum, set with a rectangular frosted rock crystal, accented by two rows of old European cut diamonds, the diamonds all totalling 2.0-2.2 carats, French import mark, 5.1cm, 19.0g. 

Estimate £2,500 - £3,500

A VINTAGE EMERALD, RUBY AND DIAMOND RABBIT BROOCH in 18ct yellow gold, comprising twisted wirework, the eye set with a round cabochon emerald accented by single cut diamonds, the nose set with a round cabochon ruby, stamped 750, 4.2cm, 10.7g. 

Estimate £1,000 - £1,500

A DIAMOND, PEARL, SAPPHIRE AND ENAMEL BIRD BROOCH designed as four birds perched on a fence, the birds set with rose cut diamonds and round cut sapphire eyes, the wings relieved in red enamel, the fence accented by pearls, no assay marks, 9.3cm, 39.2

Estimate £1,500 - £2,500

AN ANTIQUE NATURAL PEARL AND DIAMOND STAR BROOCH in yellow gold and silver, designed as an eight rayed star set to the centre with a pearl of 11.9mm, accented throughout with old and rose cut diamonds, no assay marks, 3.0cm, 8.9g. Accompanied by a ge

Estimate £5,000 - £7,000

A DIAMOND, RUBY AND SAPPHIRE BOW BROOCH, 1930S set with single and old European cut diamonds, accented by calibre cut rubies and sapphires, no assay marks, 5.0cm, 6.4g. 

Estimate £2,000 - £3,000

AN EMERALD, RUBY, SAPPHIRE AND DIAMOND BROOCH / PENDANT set with a pear shaped cabochon emerald of approximately 18.50 carats in a border of round cut diamonds and round cut sapphires, accented by a spray set with round cabochon rubies and single cut

Estimate £4,500 - £5,500

VAN CLEEF & ARPELS, A VINTAGE CORAL AND DIAMOND BROOCH in 18ct yellow gold, the tapering bar set with a cabochon coral accented on each side by an old cut diamond, signed VCA and numbered, French assay marks, 6.3cm, 8.0g. 

Estimate £1,500 - £2,500

A DIAMOND AND ENAMEL LION BROOCH in yellow gold, designed as a lion, set with round brilliant and single cut diamonds and black enamel, no assay marks, 6.3cm, 52.5g.

Estimate £3,000 - £5,000

AN ART DECO DIAMOND AND SAPPHIRE BROOCH the oval pierced brooch set with an old cut diamond of approximately 0.60 carats, accented by old cut diamonds and calibre cut sapphires, no assay marks, 5.7cm, 11.2g. 

Estimate £4,000 - £6,000

AN ANTIQUE FRENCH ART NOUVEAU OPAL WYVERN BROOCH in 18ct yellow gold, designed as a wyvern with a round cabochon opal in its mouth, French maker's mark, French assay marks, 4.0cm, 12.8g.

Estimate £1,500 - £2,500

CARTIER, A DIAMOND BAR BROOCH in platinum and yellow gold, set to the centre with an old step cut diamond accented by a row of carre cut diamonds, the diamonds all totalling 3.0-3.5 carats, signed Cartier, French assay marks, 8.5cm, 8.2g. 

Estimate £8,000 - £12,000

CARTIER, A VINTAGE RUBY, EMERALD AND DIAMOND BIRD BROOCH in 18ct yellow gold, designed as a bird perched on a branch, the head set with a row of round brilliant cut diamonds and a round cut ruby eye, accented by a spray of round cut rubies and emeral

Estimate £10,000 - £15,000

A PAIR OF ANTIQUE DIAMOND, PEARL AND EMERALD FLOWER CLIP BROOCHES in yellow gold and silver, each designed as a flower set to the centre with a pearl, the petals set throughout with old and single cut diamonds, the leaves set with calibre cut emerald

Estimate £4,000 - £6,000

AN ANTIQUE DIAMOND AND ENAMEL SNAKE BROOCH / PENDANT in yellow gold, designed as a coiled snake, the head set with a cluster of rose cut diamonds, the eyes set with further rose cut diamonds, the body decorated with black enamel, no assay marks, 4.6c

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND FEATHER BROOCH set with rectangular step cut sapphires and round cut diamonds, no assay marks, 5.3cm, 6.9g. 

Estimate £1,200 - £1,600

AN EMERALD, DIAMOND, SAPPHIRE, RUBY AND PLIQUE A JOUR ENAMEL DRAGONFLY BROOCH the tail set with a row of octagonal step cut emeralds accented by single cut diamonds, the wings decorated with green and blue plique a jour enamel, accented by round cut

Estimate £5,000 - £7,000

AN ANTIQUE PEARL AND DEMANTOID GARNET BROOCH in yellow gold, designed as a lattice of pearls, accented by round cut demantoid garnets, no assay marks, 5.0cm, 8.8g. 

Estimate £1,200 - £1,600

TIFFANY & CO., A DIAMOND AND ENAMEL PANSY BROOCH / PENDANT designed as a pansy decorated with black enamel, set with an old European cut diamond, signed Tiffany & Co., no assay marks, 3.6cm, 13.8g. 

Estimate £4,000 - £6,000

A DIAMOND PLAQUE BROOCH the openwork brooch set throughout with transitional and single cut diamonds, the diamonds all totalling 4.0-5.0 carats, no assay marks, 6.5cm, 23.2g. 

Estimate £4,000 - £6,000

A DIAMOND BROOCH / PENDANT the scrolling foliate body set throughout with round brilliant, transitional and single cut diamonds, suspending a round brilliant cut diamond drop of approximately 1.17 carats, the diamonds all totalling 6.0-7.0 carats, no

Estimate £6,000 - £8,000