VAN CLEEF AND ARPELS, A RARE AND IMPORTANT TURQUOISE AND DIAMOND ROSE DE NOEL BROOCH in 18ct yellow gold, designed as a Christmas Rose set with a cluster of round brilliant cut diamonds and gold spines, the petals set with heart-shaped polished turqu

Estimate £30,000 - £50,000

A FINE DIAMOND SUNBURST BROOCH designed as three graduating sunburst motifs on a branch of foliage, set throughout with old cut diamonds all totalling 10.5-12.5 carats, 11.5cm, 35.2g. 

Estimate £8,000 - £12,000

BULGARI, A DIAMOND BROOCH in scrolling design, comprising a curved row of baguette cut diamonds, accented by marquise cut diamonds, the diamonds all totalling 3.5-4.0 carats, signed Bvlgari, stamped 750 Roma, 6.3cm, 11.3g.  

Estimate £6,000 - £8,000

A LAPIS LAZULI, CORAL, TURQUOISE AND DIAMOND BROOCH / PENDANT set to the centre with a pear cabochon lapis lazuli, accented throughout with cabochon coral, lapis lazuli and turquoise and round brilliant cut diamonds, stamped K18, 8.3cm, 45.1g. 

Estimate £2,500 - £3,500

A VINTAGE DIAMOND STARBURST BROOCH / PENDANT in 18ct yellow gold, set to the centre with a cluster of round brilliant cut diamonds, the textured rays set with further round brilliant cut diamonds, stamped 18K, 4.5cm, 24.6g. 

Estimate £1,500 - £2,500

AN ANTIQUE TURQUOISE AND DIAMOND STAR BROOCH designed as a six rayed star set with round cabochon turquoise, accented by old cut diamonds and a circular border set with further turquoise, no assay marks, 2.8cm, 8.0g. 

Estimate £500 - £700

AN ANTIQUE STAR SAPPHIRE AND PASTE BROOCH in yellow gold and silver, set with a cabochon star sapphire of approximately 13.00 carats in a border of old cut diamonds, no assay marks, 1.9cm, 4.5g. 

Estimate £600 - £800

AN ANTIQUE VICTORIAN AMETHYST, CITRINE, PEARL AND DIAMOND FLOWER BROOCH in yellow gold and silver, set to the centre with a pearl, the petals set with heart shaped amethysts and citrines in borders of old cut diamond, to a gold stem, no assay marks,

Estimate £1,000 - £1,500

NO RESERVE - AN ANTIQUE CONCH SHELL BAR BROOCH in 9ct yellow gold, set with a conch shell, stamped 9ct, 6.3cm, 11.4g. 

Estimate £150 - £250

CHANEL, A LARGE CC BROOCH comprising an interlocking CC motif within a circle set with gold tone beads, signed Chanel, 6.0cm, 21.5g.

Estimate £400 - £600

A DIAMOND BOW BROOCH, 1950S designed as a stylised bow set with single and baguette cut diamonds, no assay marks, 3.5cm, 7.3g. 

Estimate £1,200 - £1,600

DE VROOMEN, A PEARL, DIAMOND AND ENAMEL BROOCH in 18ct yellow gold, comprising three rows of pearls terminating at each end with a scrolling motif set with round brilliant cut diamonds and accented by grey guilloche enamel, signed De Vroomen, full Br

Estimate £1,000 - £1,500

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

OSCAR HEYMAN & BROTHERS, A DIAMOND AND ENAMEL LADYBIRD BROOCH designed as a ladybird relieved in black and red enamel, accented by heart and round brilliant cut diamonds, maker's mark, stamped 18K, 2.0cm, 8.4g. 

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

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

BULGARI, A DIAMOND BROOCH designed as a spray of foliage, comprising five flower motifs set to the centre with later round brilliant cut irradiated orange and green diamonds, accented throughout with pear and round brilliant cut diamonds, the diamond

Estimate £6,000 - £8,000

TIFFANY & CO., A DIAMOND AND SAPPHIRE BUTTERFLY BROOCH the wings jewelled with rows of marquise and baguette cut diamonds, the body pave set with round brilliant cut diamonds, accented by baguette cut diamonds and two cabochon sapphires, the diamonds

Estimate £15,000 - £20,000

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

A PEARL CIRCLE BROOCH in 14ct white gold, designed as an open circle set with pearls, stamped 585, 2.3cm, 3.4g. 

Estimate £60 - £80

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

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

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 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

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

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

AN ANTIQUE DIAMOND, ENAMEL AND PEARL BAR BROOCH, EARLY 20TH CENTURY set with old and rose cut diamonds, accented by two pearls and orange guilloche enamel, no assay marks, 5.4cm, 4.5g. Accompanied by a fitted Garrard box.  Provenance: From the colle

Estimate £250 - £350

A MARCASITE HORSE AND JOCKEY BROOCH designed as a stirrup with a horse and jockey motif, set throughout with rose cut marcasite, stamped 935, 5.5cm, 13.0g. 

Estimate £300 - £500