A CHALCEDONY AND DIAMOND FEATHER BROOCH in 18ct white gold, comprising a lilac chalcedony carved to depict a feather, accented by rows of round brilliant cut diamonds, inscribed 101.55ct d0.531, stamped Au750, 6.7cm, 30.7g. 

Estimate £1,500 - £2,500

A VINTAGE RUBY, SAPPHIRE, EMERALD AND DIAMOND BROOCH in 18ct yellow gold, designed as a stylised basket of flowers, set with four round brilliant cut diamonds accented by clusters of round cut rubies, sapphires and emeralds, stamped 750, 3.5cm, 10.8g

Estimate £800 - £1,200

ARNO MALINOWSKI FOR GEORG JENSEN, A VINTAGE ROBIN BROOCH in silver, design number 239, the openwork heart shaped brooch depicting a robin accented by foliage, post 1945 Georg Jensen maker's mark, stamped Sterling Denmark, 4.1cm, 12.44g.

Estimate £150 - £250

BEN ROSENFELD, A VINTAGE DIAMOND AND ENAMEL FLOWER BROOCH, 1967 in 18ct yellow gold, designed as the head of a flower, set to the centre with a cluster of round brilliant cut diamonds and gold stamens, the petals decorated with blue guilloche enamel,

Estimate £800 - £1,200

BOUCHERON, A VINTAGE DIAMOND CLIP BROOCH, 1950S in 18ct yellow gold, designed as a spray of leaves, set with round brilliant cut diamonds, signed Boucheron Paris, French assay marks, 5.7cm, 23.6g.

Estimate £5,000 - £7,000

A RUBY AND DIAMOND BROOCH in 18ct yellow gold, the openwork brooch set with a cluster of round brilliant cut diamonds accented by marquise cut rubies and further round brilliant cut diamonds, the rubies all totalling 13.82 carats, inscribed 13.827ct

Estimate £1,500 - £2,500

A DIAMOND, ENAMEL AND RUBY LADYBIRD BROOCH in 18ct yellow gold, designed as a ladybird decorated with red and black enamel, accented by a row of round brilliant cut diamonds, the eyes set with round cut rubies, stamped 750, 2.1cm, 6.5g. 

Estimate £400 - £600

HENNING KOPPEL FOR GEORG JENSEN, A VINTAGE ABSTRACT ENAMEL BROOCH in silver, design number 315, designed as an abstract splash decorated with green enamel, signed HK, post 1945 Georg Jensen maker's mark, stamped Sterling Denmark, 3.7cm, 23.4g.

Estimate £300 - £500

ARNO MALINOWSKI FOR GEORG JENSEN, A VINTAGE DEER BROOCH in silver, design number 256, the oval brooch designed to depict a kneeling deer, post 1945 Georg Jensen maker's mark, stamped 925S Sterling Denmark, 4.2cm, 11.8g. 

Estimate £150 - £250

CARTIER, A VINTAGE TURQUOISE AND DIAMOND FLOWER BROOCH, CIRCA 1970 in 18ct yellow gold, designed as an exotic flower, set with cabochon turquoise and round brilliant cut diamonds, the diamonds all totalling 3.1-3.3 carats, signed Cartier Paris, Frenc

Estimate £15,000 - £25,000

A VINTAGE TURQUOISE BROOCH in 18ct yellow gold, in an abstract foliate design, set with four cabochon turquoise, full British hallmarks for London 1971, 5.5cm, 23.0g. 

Estimate £800 - £1,200

JOHN DONALD, A VINTAGE CORAL AND PEARL BROOCH, 1970 in 18ct yellow gold, in abstract design, the openwork brooch set with polished coral beads and pearls, signed John Donald, full British hallmarks for London 1970, 6.0cm, 23.9g. 

Estimate £1,000 - £1,500

AN ANTIQUE PORTRAIT MINIATURE BROOCH, 18TH CENTURY, depicting a woman in period dress, in a border of seed pearls with bow detailing, no assay marks, 3.0cm, 6.6g.

Estimate £200 - £400

ARNO MALINOWSKI FOR GEORG JENSEN, A VINTAGE DEER AND SQUIRREL BROOCH in silver, design number 318, the square brooch depicting a deer and a squirrel among leaves, Georg Jensen post 1945 maker's mark, stamped Sterling Denmark, 4.0cm, 14.6g. 

Estimate £200 - £300

NO RESERVE - AN ANTIQUE GARNET LOCKET BROOCH in yellow gold, the circular body set with a cluster of round and oval cut garnets, with a glass covered locket panel to the reverse, no assay marks, 3.6cm, 12.5g. 

Estimate £100 - £150

AN ANTIQUE PEARL AND ENAMEL ETRUSCAN REVIVAL BROOCH in yellow gold, the navette shaped brooch with an eight pointed blue enamel star set with a pearl to the centre, accented by beaded and rope work decoration, glass locket panel to the reverse, no as

Estimate £200 - £300