ANDREW GRIMA, A MODERNIST DIAMOND LEAF BROOCH, 1967 in 18ct yellow gold, designed as a leaf set with an old cut diamond, signed GRIMA, full British hallmarks for London 1967, 4.1cm, 7.2g. 

Estimate £2,000 - £3,000

AN EXQUISITE ANTIQUE DIAMOND FLOWER BROOCH, 19TH CENTURY in yellow gold and silver, designed as a flower set to the centre with an old cut diamond of approximately 1.20 carats, each petal set throughout with further old cut diamonds, the diamonds tot

Estimate £8,000 - £12,000

A FINE ANTIQUE EDWARDIAN DIAMOND DEVANT DE CORSAGE BROOCH in platinum and yellow gold, in a scrolling design accented by floral motifs and suspended swags, set throughout with old cut diamonds, the principal diamonds weighing approximately 1.20 carat

Estimate £10,000 - £15,000

A SAPPHIRE AND DIAMOND BROOCH, 1930S in platinum, the openwork geometric brooch set throughout with old mine, old pear and rose cut diamonds all totalling 7.0-7.5 carats, accented by a row of graduating cushion cut sapphires all totalling 2.5-3.0 car

Estimate £2,000 - £3,000

AN ANTIQUE ART DECO DIAMOND BROOCH in platinum, the geometric openwork brooch set to the centre with an old cut diamond of approximately 1.40 carats, further set throughout with old cut diamonds all totalling 3.0-3.5 carats, no assay marks, 5.1cm, 8.

Estimate £2,000 - £3,000

AN ANTIQUE ART DECO AGATE, DIAMOND AND SAPPHIRE FOX TERRIER BROOCH in platinum, comprising a finely carved agate fox terrier head set with onyx eyes and nose, in a frame of single cut diamonds and calibre cut sapphires, the dog's collar set with furt

Estimate £6,000 - £8,000

TIFFANY & CO., A RUBY AND DIAMOND PENGUIN BROOCH in 18ct yellow gold, designed as a penguin set with a round brilliant cut diamond, the eyes set with round cut rubies, signed Tiffany, stamped 18K, 4.3cm, 11.9g. 

Estimate £1,500 - £2,500

A FINE AND RARE ANTIQUE TWO SIDED MICRO MOSAIC BROOCH in yellow gold, comprising a double sided micro mosaic within  a border of beaded and twisted wirework, the front of the micro mosaic inlaid with varicoloured pieces of glass depicting the Doves o

Estimate £4,000 - £6,000

AN ANTIQUE DIAMOND CRESCENT MOON BROOCH, 19TH CENTURY in yellow gold and silver, designed as a crescent moon set with a row of graduating old cut diamonds, in a border of rose cut diamonds, the diamonds all totalling 2.0-2.5 carats, no assay marks, 3

Estimate £2,000 - £3,000

VITZTHUM, AN AQUAMARINE AND DIAMOND BROOCH, 1960S in 18ct white gold, set with an octagonal step cut aquamarine of approximately 20.86 carats, in a starburst style border set with round brilliant and single cut diamonds, the diamonds all totalling 2.

Estimate £8,000 - £12,000

AN ANTIQUE SAPPHIRE, JADEITE JADE, DIAMOND AND ENAMEL PLAQUE BROOCH in yellow gold, the openwork brooch set with a cushion cut sapphire, accented by black enamel, rose cut diamonds and polished jadeite jade, no assay marks, 5.0cm, 8.8g. 

Estimate £1,200 - £1,600

AN ANTIQUE ART DECO SAPPHIRE AND DIAMOND DOUBLE CLIP BROOCH in platinum, the geometric openwork brooch set with old cut diamonds and calibre cut sapphires, the diamonds all totalling 2.8-3.0 carats, detachable from the frame to be worn as two clip br

Estimate £2,000 - £3,000

A MOTHER OF PEARL, BLUE CHALCEDONY, CORAL AND DIAMOND BROOCH in 18ct yellow gold, the circular brooch comprising a mother of pearl disc with applied geometric motifs set with polished blue chalcedony, coral and round brilliant cut diamonds, stamped 7

Estimate £3,000 - £5,000

CARTIER, A DIAMOND, ONYX AND TSAVORITE GARNET PANTHERE JABOT PIN BROOCH in 18ct white gold, designed as a panther's head pave set with round brilliant cut diamonds, accented by pear cut tsavorite garnet eyes and polished black onyx, terminating with

Estimate £8,000 - £12,000

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 £8,000 - £12,000

OSCAR HEYMAN, A FINE YELLOW SAPPHIRE, SAPPHIRE AND DIAMOND BROOCH, 1970S in platinum and 18ct yellow gold, set with a cushion cut yellow sapphire of approximately 28.50 carats in a cluster of round brilliant cut diamonds and round cut sapphires, the

Estimate £40,000 - £60,000

AN ANTIQUE DIAMOND BROOCH / PENDANT in yellow gold and platinum, in scrolling foliate design set throughout with old cut diamonds, the diamonds all totalling 3.5-4.0 carats, detachable brooch fittings, no assay marks, 6.7cm, 14.2g. 

Estimate £4,000 - £6,000

CARTIER, A CEYLON NO HEAT SAPPHIRE AND DIAMOND CLIP BROOCH in platinum and white gold, the shield shaped brooch set with double cabochon sapphires, accented by single and round brilliant cut diamonds, the sapphires all totalling 95.0-100.0 carats, si

Estimate £30,000 - £50,000

A FINE ANTIQUE ART DECO FRENCH RUBY AND DIAMOND JABOT PIN in 18ct white gold and platinum, set with an old oval cut diamond of approximately 1.75 carats accented by further old cut diamonds, the other end set with an oval cut ruby of approximately 1.

Estimate £6,000 - £8,000

AN ANTIQUE NATURAL SALTWATER PEARL AND DIAMOND BROOCH set with a pearl of 8.2mm in a double border of old cut diamonds and further pearls, the diamonds all totalling 2.5-3.0 carats, no assay marks, 2.7cm, 8.5g. Accompanied by a gemmological report st

Estimate £6,000 - £8,000

A SYNTHETIC SAPPHIRE AND DIAMOND BOW BROOCH in platinum and white gold, designed as a bow set with calibre cut synthetic sapphires, accented throughout with single cut diamonds, no assay marks, 6.5cm, 9.5g. 

Estimate £2,000 - £3,000

ATTR TO PAUL FLATO, A VINTAGE RUBY, SAPPHIRE AND DIAMOND SHOE BROOCH in yellow gold, designed as a shoe with a pom pom, set throughout with cabochon rubies, cushion and round cut sapphires and single cut diamonds, marked indistinctly, 4.0cm, 7.4g. 

Estimate £1,200 - £1,600

J.E. CALDWELL, AN ANTIQUE DIAMOND PLAQUE BROOCH in platinum, in oval form, set throughout with old European cut diamonds, the diamonds all totalling 4.0-4.5 carats, signed J.E. Caldwell, no assay marks, 4.7cm, 11.3g. 

Estimate £6,000 - £8,000

AN ANTIQUE DIAMOND BROOCH, 18TH CENTURY AND LATER in yellow gold and silver, designed as a spray of foliage set throughout with rose cut diamonds, accented by a white ostrich feather, no assay marks, 11.5cm, 12.6g. 

Estimate £4,000 - £6,000

AN ANTIQUE PEARL AND DIAMOND FLORAL SPRAY BROOCH in silver and yellow gold, designed as a bouquet of flowers and clover set throughout with old cut and rose cut diamonds, the diamonds totalling 3.0 - 3.5 carats, accented by two pearls, no assay marks

Estimate £3,000 - £5,000

A NATURAL SALTWATER PEARL AND PINK SAPPHIRE BROOCH / PENDANT in yellow gold and silver, set with a pearl of 7.7mm in two concentric rows of round cut pink sapphires, accented by further pearls, the pearls ranging from 4.7mm to 7.7mm, no assay marks,

Estimate £4,000 - £6,000

A FINE ANTIQUE BURMA NO HEAT SAPPHIRE AND DIAMOND BROOCH in yellow gold, set with a cabochon sapphire of 6.14 carats in a cluster of rose cut diamonds, the diamonds all totalling 1.4-1.6 carats, no assay marks, 2.1cm, 4.9g. Accompanied by a gemmologi

Estimate £10,000 - £15,000

AN ANTIQUE CHRYSOLITE AND RUBY BIRD BROOCH in yellow gold and silver, designed as a bird, set throughout with cushion, marquise and pear cut chrysolite, the eye set with a cushion cut ruby, no assay marks, 7.1cm, 15.5g. 

Estimate £3,000 - £5,000

A NATURAL SALTWATER PEARL AND DIAMOND BROOCH in yellow and white gold, the openwork brooch in foliate design, set with a pearl of 10.7mm and accented throughout with old cut diamonds, the diamonds all totalling 3.0-3.0 carats, no assay marks, 7.4cm,

Estimate £4,000 - £6,000