A PAIR OF DEMANTOID GARNET AND DIAMOND CLUSTER STUD EARRINGS in 18ct yellow gold, each set to the centre with a round cut demantoid garnet in alternating rows of round brilliant cut diamonds and round cut demantoid garnets, stamped 750, 1.8cm, 9.3g.

Estimate £800 - £1,200

A VINTAGE AQUAMARINE AND DIAMOND BOW BROOCH, CIRCA 1950 in platinum and 18ct white gold, set with two tapered fancy cut aquamarines, accented by rose cut, single cut and round brilliant cut diamonds, stamped PT, 18CT, 4.0cm, 11.8g.

Estimate £4,000 - £6,000

AN ART DECO RUBY AND DIAMOND BAR BROOCH set with a row of step cut rubies and old cut diamonds, no assay marks, 4.9cm, 3.4g. Accompanied by a fitted box.

Estimate £800 - £1,200

AN ART DECO COLOMBIAN EMERALD AND DIAMOND BROOCH in platinum, set with an octagonal step cut Colombian emerald of 1.70 carats accented by step cut emeralds and old cut diamonds, the diamonds all totalling 4.5-5.0 carats, no assay marks, 4.5cm, 9.2g.

Estimate £8,000 - £12,000

A DIAMOND, ONYX AND TSAVORITE GARNET BOAR BROOCH in 18ct white gold, set throughout with round brilliant cut diamonds, an onyx tusk, and a round cut tsavorite garnet eye, stamped 750, 2.5cm, 4.6g.

Estimate £800 - £1,200

AN ANTIQUE GARNET AND PEARL BROOCH the domed body set to the centre with a round cabochon garnet within a star shaped border set with seed pearls, over a ground of rose cut garnets, no assay marks, 3.0cm, 9.8g.

Estimate £100 - £150

AN ANTIQUE RUBY AND PEARL HEART BROOCH in 9ct yellow gold, designed as a series of interlocking curb links with a central openwork heart motif set with alternating round cut rubies and pearls, surmounted by a lover's knot motif, stamped 9CT, 4.5cm, 4

Estimate £200 - £300

A VINTAGE GARNET AND PEARL CRESCENT BROOCH in 9ct yellow gold, designed as a crescent moon, set with alternating round cut garnets and pearls, full British hallmarks for London 1972, 3.0cm, 4.0g.

Estimate £80 - £120

A VINTAGE DEMANTOID GARNET AND DIAMOND LIZARD BROOCH in yellow gold, designed as a lizard set with round cut demantoid garnets accented by a row of old cut diamonds, the eyes set with round cut rubies, no assay marks, 5.8cm, 14.2g.

Estimate £4,000 - £6,000

A VINTAGE DIAMOND BROOCH in 18ct white gold, the scrolling body set with old cut diamonds all totalling 4.4-4.7 carats, later British hallmarks, 4.3cm, 11.9g.

Estimate £2,000 - £3,000

AN ANTIQUE GEORGIAN DIAMOND AND PASTE BROOCH in silver, designed as a stylised bow set with a round cut foiled pink paste, accented throughout with rose cut diamonds, no assay marks, 4.5cm, 12.6g.

Estimate £2,000 - £3,000

AN ANTIQUE DIAMOND BROOCH in silver, in foliate design suspending an articulated drop, set throughout with old cut diamonds, indistinct Portuguese assay marks, 4.3cm, 12.6g.

Estimate £5,000 - £7,000

AN EMERALD PANTHER BROOCH in yellow gold, designed as a panther with a textured body, the eye set with a round cut emerald, no assay marks, 5.7cm, 10.6g.

Estimate £800 - £1,200

AN ANTIQUE OPAL AND DIAMOND BAR BROOCH in 18ct gold, set with a central oval cabochon opal between two old cut diamonds, with further rose cut diamonds to the bar, French import marks for 18ct gold, 3.8cm, 4.8g.

Estimate £500 - £700

AN ANTIQUE DIAMOND, ENAMEL AND RUBY BROOCH in yellow gold, set with a cluster of rose cut diamonds in a scrolling and fan shaped border set with further rose cut diamonds and a round cut ruby, accented by blue enamel, suspending five articulated blue

Estimate £2,500 - £3,500

AN ANTIQUE BLUE PASTE AND PEARL CRESCENT BROOCH in 9ct yellow gold, designed as a crescent moon, set with alternating round cut blue paste stones and pearls, stamped 9ct, 2.3cm, 2.6g.

Estimate £100 - £150

A VINTAGE DIAMOND FLOWER SPRAY BROOCH in white gold, designed as a floral spray tied together with a bow, set throughout with old cut diamonds, the diamonds all totalling 2.2-2.6 carats, no assay marks, 2.9cm, 5.2g.

Estimate £1,500 - £2,500

AN ANTIQUE OPAL, RUBY AND DIAMOND WITCH'S HEART BROOCH in yellow gold, set with a heart shaped cabochon opal in a border of round cut rubies surmounted by an old cut diamond, no assay marks, 2.9cm, 5.0g.

Estimate £2,000 - £3,000

AN ANCIENT INTAGLIO ETRUSCAN REVIVAL BROOCH, 19TH CENTURY in yellow gold, set with four ancient chromium chalcedony intaglios carved to depict classical figures accented by beaded and rope work detailing, no assay marks, 5.4cm, 9.5g.

Estimate £2,000 - £3,000

AN ANTIQUE GEORGIAN EMERALD AND DIAMOND BROOCH / PENDANT in silver, the circular form surmounted by a crown, set throughout with old cut diamonds and step cut emeralds, no assay marks, 4.1cm, 12.0g.

Estimate £2,000 - £3,000

YVEL, A PEARL, EMERALD, RUBY, SAPPHIRE AND DIAMOND CLOWN BROOCH in 18ct yellow gold, designed as a clown, a baroque pearl forming the legs, the body set with round cut diamonds, sapphires, rubies and emerald, a cabochon ruby to the nose, signed YVEL,

Estimate £600 - £800

A RETRO RUBY AND DIAMOND DOUBLE CLIP BROOCH in 14ct rose gold, the scrolling body set with round cut rubies and round brilliant cut diamonds, the two clips detachable from the frame as a pair of clip brooches, the rubies all totalling 1.2-1.5 carats,

Estimate £1,000 - £1,500

AN ANTIQUE AQUAMARINE AND PEARL BROOCH in yellow gold, set with an oval cut aquamarine of approximately 50.00 carats in a border of pearls, no assay marks, 4.8cm, 23.7g.

Estimate £3,000 - £5,000

AN ANTIQUE RUBY, DIAMOND AND SAPPHIRE BROOCH in yellow gold and silver, designed as a flower set with an old cut diamond, a round cut ruby and a round cut sapphire within a circular frame set with alternating old cut diamonds and round cut rubies, no

Estimate £1,000 - £1,500

GUBELIN, A DIAMOND CLIP BROOCH in 18ct yellow gold, in the form of a flower set with rose cut diamonds, Gubelin maker's mark, stamped 750, 3.1cm, 13.3g.

Estimate £3,000 - £5,000

AN ANTIQUE PEARL AND DIAMOND ARROW BROOCH in yellow gold, set with a central pearl of 6.6mm in a cluster of rose cut diamonds, the head and feathers set with seed pearls, no assay marks, 5.5cm, 6.9g.

Estimate £250 - £350

NO RESERVE - A VINTAGE GEMSET BIRD BROOCH in silver, designed as a bird amongst leaves, set with faux pearls and a red gemstone, stamped 925, 5.0cm, 17.2g.

Estimate £50 - £70