COLLINGWOOD, AN EMERALD AND DIAMOND GYPSY RING in 18ct yellow gold, set with an oval cabochon emerald accented by two pear shaped diamonds, signed Collingwood, London import marks, size N / 6.75, 10.6g.

Estimate £800 - £1,200

CARTIER, A VINTAGE OR ET ACIER RING in 18ct yellow gold and steel, comprising alternating sections of gold and steel wire around a gold band, signed Cartier and numbered, no assay marks, size H1/2 / 4, 5.4g.

Estimate £600 - £800

THEO FENNELL, A PINK TOURMALINE AND DIAMOND RING in 18ct yellow gold, set with an octagonal step cut pink tourmaline of approximately 4.22 carats between two heart shaped diamonds both totalling 0.9-1.0 carat, signed Theo Fennell, full British hallma

Estimate £4,000 - £6,000

A SOLITAIRE CHAMPAGNE DIAMOND PENDANT NECKLACE in 9ct yellow gold, set with a pear cut champagne diamond of approximately 0.88 carats, suspended from a trace chain, full British hallmarks, pendant 0.8cm, chain 45.0cm, 2.8g.

Estimate £500 - £700

TIFFANY & CO., A SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 0.27 carats, signed Tiffany & Co., stamped PT950, size J / 4.75, 4.5g. Accompanied by a gemmological report stating the diamond is F colour and

Estimate £1,000 - £1,500

A GARNET AND DIAMOND SWEETHEART RING in yellow gold, set with a pear shaped cabochon cut garnet to a surround of rose cut diamonds, the shoulders designed as two leaves, no assay marks, size N1/2 / 7, 2.5g.

Estimate £800 - £1,200

A VINTAGE RUBY FIVE STONE RING in 22ct yellow gold, set with a row of five graduated step cut rubies all totalling 2.5-3.0 carats, stamped 22c, size R1/2 / 9, 4.0g.

Estimate £5,000 - £7,000

A 31.00 CARAT CEYLON NO HEAT YELLOW SAPPHIRE AND DIAMOND RING in yellow gold, set with an oval shaped yellow sapphire of 31.00 carats accented by rose cut diamonds, no assay marks, size K / 5.25, 14.0g. Accompanied by a gemmological report stating th

Estimate £10,000 - £15,000

AN ANTIQUE ROCK CRYSTAL, DIAMOND AND RUBY HEART RING, 19TH CENTURY AND LATER in yellow gold and silver, set to the centre with a heart shaped rock crystal in a border of alternating rose cut diamonds and cushion cut rubies, on a later band, no assay

Estimate £2,500 - £3,500

A VINTAGE DIAMOND NAVETTE RING in yellow gold, the navette face set with old cut and rose cut diamonds all totalling 2.5-2.7 carats, no assay marks, size O / 7.25, 6.6g.

Estimate £2,000 - £3,000

A DIAMOND FULL ETERNITY RING set all around with a row of graduated old cut diamonds, no assay marks, size N / 6.75, 6.8g.

Estimate £800 - £1,200

AN AQUAMARINE AND DIAMOND RING in platinum, set with an oval cut aquamarine of approximately 1.29 carats in a border of round brilliant cut diamonds, stamped PLAT, size M1/2 / 6.5, 4.7g.

Estimate £800 - £1,200

A PEARL AND DIAMOND FLOWER RING in 18ct white gold, set with a pearl of 12.1mm, the petals pave set with round brilliant cut diamonds all totalling 4.0-4.5 carats, full British hallmarks, size O1/2 / 7.5, 18.8g.

Estimate £3,000 - £5,000

A GREEN TOURMALINE AND DIAMOND HALO RING in platinum, set with an oval cut green tourmaline of 3.83 carats in a border of round cut diamonds, the band set further diamonds, full British hallmarks, size M1/2 / 6.5, 8.2g.

Estimate £1,500 - £2,500

A DIAMOND BOMBE RING in 18ct white gold, the bombe face set with round brilliant cut diamonds, the diamonds totalling 7.3-7.5 carats, Portuguese assay marks, size M / 6.25, 19.7g.

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND GYPSY RING in 18ct white gold, set with an oval cabochon emerald accented by two round brilliant cut diamonds, stamped 750, size J / 4.75, 8.3g.

Estimate £800 - £1,200

A DIAMOND AND RUBY FOX RING in yellow gold, designed as the head of a fox set with rose cut diamonds and round cut ruby eyes, no assay marks, size Q1/2 / 8.5, 1.8g.

Estimate £800 - £1,200

A COLOMBIAN EMERALD RING in 18ct yellow gold, set with a cabochon emerald of approximately 7.47 carats, stamped 750, size I1/2 / 4.5, 8.8g. With a gemmological verbal assessment stating the emerald is of Colombian origin.

Estimate £4,000 - £6,000

AN ANTIQUE RUBY FIVE STONE RING in yellow gold, set with five graduated cushion cut rubies accented by round cut diamonds, no assay marks, size P1/2 / 8, 3.8g.

Estimate £1,200 - £1,600

AN ANTIQUE AGATE CAMEO RING in yellow gold, set with an agate cameo carved to depict the bust of a bearded man, no assay marks, size P1/2 / 8, 5.6g.

Estimate £600 - £800

A YELLOW SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut yellow sapphire of 0.94 carats in a cluster of round brilliant cut diamonds, the diamonds totalling 0.96 carats, inscribed 0.94 0.96, full British hallmarks, size N

Estimate £1,500 - £2,500

A VINTAGE SPINEL AND DIAMOND GYPSY RING in yellow gold, set with a pink spinel between two round brilliant cut diamonds, full British hallmarks fro London 1985, size R / 8.5, 2.7g.

Estimate £600 - £800

AN ANTIQUE MOONSTONE AND DIAMOND SWEETHEART RING, 19TH CENTURY AND LATER in yellow gold and silver, set with a heart shaped cabochon moonstone in a border of rose cut diamonds surmounted by a bow set with further rose cut diamonds, later shank stampe

Estimate £2,500 - £3,500

A RUBY AND DIAMOND DRESS RING in yellow gold, set with three cushion cut rubies all totalling 2.0-2.2 carats, accented by old cut diamonds, no assay marks, size J1/2 / 5, 3.5g.

Estimate £2,000 - £3,000

A BELLE EPOQUE DIAMOND RING set with three principal old cut diamonds within an openwork border, each shoulder accented by a further old cut diamonds, the diamonds all totalling 1.4-1.6 carats, no assay marks, size L1/2 / 6, 4.9g.

Estimate £2,500 - £3,500

A DIAMOND CLUSTER RING in platinum, set with a cluster of round brilliant cut diamonds, the diamonds totalling 1.56 carats, inscribed 1.56, full British hallmarks, size M1/2 / 6.5, 6.4g.

Estimate £1,500 - £2,500

A TANZANITE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a cushion cut tanzanite of 3.40 carats in a border of round brilliant cut diamonds, inscribed 3.40, full British hallmarks, size M1/2 / 6.5, 6.7g.

Estimate £2,000 - £3,000

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an old cut diamond of approximately 1.50 carats in a double border of step cut sapphires and old cut diamonds, the band accented by further old cut diamonds, no assay marks, size L / 5

Estimate £5,000 - £7,000

A SAPPHIRE AND DIAMOND TOI ET MOI RING in 18ct yellow and white gold, set with a round cut sapphire of 2.10 carats and a round brilliant cut diamond of 1.54 carats, accented by further single cut diamonds, no assay marks, size O / 7, 5.1g.

Estimate £8,000 - £12,000

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an old cut diamond of 1.42 carats, full British hallmarks, size L / 5.75, 2.8g.

Estimate £4,000 - £6,000

THEO FENNELL, A  PURPLE SAPPHIRE AND DIAMOND RING in 18ct white gold, set with a cushion cut purple sapphire of approximately 4.18 carats in a border of round cut diamonds, further round cut diamonds accenting the band, Theo Fennell maker's mark, ful

Estimate £4,000 - £6,000

A VINTAGE EMERALD AND DIAMOND CLUSTER RING in 18ct yellow gold, set with three round cut emeralds in a border of round brilliant cut diamonds, full British hallmarks for London 1982, size O1/2 / 7.5, 4.7g.

Estimate £600 - £800

AN EMERALD AND DIAMOND FULL ETERNITY RING in yellow gold, set all around with a row of alternating carre cut diamonds and step cut emeralds, no assay marks, size K / 5.25, 3.7g.

Estimate £2,500 - £3,500

BULGARI, A B.ZERO 1 RING in 18ct yellow gold, the band with engraved lettering 'BVLGARI' to the sides, signed Bvlgari and numbered, stamped 750, size R1/2 / 9, 8.1g.

Estimate £400 - £600

A PINK TOURMALINE AND DIAMOND CLUSTER RING in platinum, set with an oval cut pink tourmaline of 10.60 carats in a border of round cut diamonds, the band set with further diamonds, the diamonds all totalling 1.26 carats, inscribed 10.60, stamped PT950

Estimate £2,500 - £3,500

A TURQUOISE AND DIAMOND BOMBE RING in 18ct white gold, the bombe face set with pear and oval cabochon turquoise accented by round cut diamonds, stamped 18K, size O / 7.25, 14.3g.

Estimate £2,000 - £3,000

A PERIDOT AND DIAMOND RING in 18ct white gold, set with an octagonal step cut peridot of approximately 2.18 carats, the tapered shoulders set with baguette and round brilliant cut diamonds, stamped 18k, size N / 6.75, 4.7g.

Estimate £800 - £1,200

A RAINBOW MOONSTONE, SAPPHIRE AND DIAMOND CLUSTER RING in white gold, set with a cabochon rainbow moonstone (labradorite) in concentric borders of round cut sapphires and round cut diamonds, stamped Au750, size N1/2 / 6.75, 6.0g.

Estimate £800 - £1,200

TIFFANY & CO., AN AMETHYST RING in 18ct white gold, set with a heart shaped cabochon amethyst, signed Tiffany & Co., stamped 750, size K / 5.25, 4.9g. Accompanied by a Tiffany & Co. pouch.

Estimate £300 - £500

A DIAMOND DRESS RING in platinum, set with four round brilliant cut diamonds all totalling 1.02 carats, full British hallmarks, size L / 5.75, 5.3g.

Estimate £1,500 - £2,500

A YELLOW SAPPHIRE AND DIAMOND RING in platinum, set with an octagonal step cut yellow sapphire of approximately 3.50 carats, accented by trios of baguette cut diamonds, stamped PLAT, size O / 7, 5.2g.

Estimate £1,200 - £1,600

BULGARI, A B.ZERO 1 RING in 18ct white gold, the band with engraved lettering 'BVLGARI' to the sides, signed Bvlgari and numbered, stamped 750, size J1/2 / 5, 7.2g.

Estimate £300 - £500

AN AQUAMARINE AND DIAMOND CLUSTER RING in platinum, set with an oval cut aquamarine of 3.50 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.08 carats, inscribed 3.50 D1.08, full British hallmarks, size O1/2 / 7.7g.

Estimate £2,000 - £3,000

A TSAVORITE GARNET AND DIAMOND CLUSTER RING in platinum, set with a cushion cut tsavorite garnet of 1.14 carats in a double border of round brilliant cut diamonds, the band set with further diamonds, full British hallmarks, size L1/2 / 6, 8.7g.

Estimate £2,000 - £3,000

SOLANGE AZAGURY-PARTRIDGE, A GEMSET COURT BAND RING in 18ct blackened gold, the concave band set to both sides with round cut rubies, pink, purple and green sapphires and white, blue, orange and yellow diamonds, maker's mark, full British hallmarks,

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND DRESS RING in 18ct white gold, set with an octagonal step cut emerald of 1.96 carats in a border of round cut diamonds, accented by two emerald cut diamonds in further borders of round cut diamonds, the diamonds totalling 0.77

Estimate £2,000 - £3,000

A DIAMOND FULL ETERNITY RING in 18ct white gold, set all around with a row of round brilliant cut diamonds all totalling 3.00 carats, partial British hallmarks, size M1/2 / 6.5, 5.3g.

Estimate £2,000 - £3,000

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a round brilliant cut diamond of approximately 2.20 carats, stamped 750, size N1/2 / 7, 4.8g.

Estimate £10,000 - £15,000

A DIAMOND CLUSTER RING in 18ct yellow gold, set with a cluster of oval cut diamonds, the diamonds all totalling 4.01 carats, stamped 750, size M / 6.25, 7.0g.

Estimate £3,000 - £5,000

CHAUMET, A DIAMOND FULL ETERNITY RING in 18ct yellow gold, set all around with a row of princess cut diamonds, accented by two rows of round brilliant cut diamonds, the diamonds all totalling 3.0-3.2 carats, signed Chaumet Paris, stamped Or 750, size

Estimate £4,000 - £6,000

A YELLOW ZIRCON AND DIAMOND CLUSTER RING in platinum, set with an oval cut yellow zircon of approximately 19.0 carats in a cluster of marquise cut diamonds, the diamonds all totalling 5.0 carats, stamped Pt950, size M / 6.25, 19.9g.

Estimate £3,500 - £4,500

AN AQUAMARINE AND DIAMOND CLUSTER RING in platinum, set with a cushion cut aquamarine of approximately 2.87 carats in a border of round brilliant cut diamonds, stamped PLAT, size M1/2 / 6.5, 7.7g.

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND RING in platinum, set with an octagonal step cut emerald of approximately 2.24 carats in a double border of single cut diamonds, the band set with further diamonds, stamped PLAT, size M / 6.25, 7.6g.

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND DRESS RING in 18ct white gold, set with an oval cut emerald in a concentric border of round brilliant cut diamonds and half moon cut emeralds, full British hallmarks, size M / 6.25, 7.5g.

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND DRESS RING in white gold, set with round brilliant and baguette cut diamonds and marquise cut sapphires, the diamonds all totalling 1.6-1.8 carats, marked indistinctly, size L / 5.75, 6.6g.

Estimate £1,500 - £2,500

A DIAMOND DRESS RING in 18ct white gold, set with two graduated rows of baguette cut diamonds, accented by rows of round brilliant cut diamonds, the diamonds all totalling 2.5-2.6 carats, stamped 750, size M1/2 / 6.5, 9.7g.

Estimate £1,200 - £1,600

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in 18ct white gold, set with a cushion cut sapphire of approximately 1.38 carats accented by a double border of round brilliant cut diamonds, further round brilliant cut diamonds to the band, stamped 750, si

Estimate £1,500 - £2,500

A NATURAL PEARL AND DIAMOND RING set with a natural saltwater pearl of 10.4mm accented by single cut diamonds, no assay marks, size L / 5.75, 3.5g. Accompanied by a gemmological report stating the pearl is natural and of saltwater origin.

Estimate £3,000 - £5,000

A RUBY AND DIAMOND DRESS RING in platinum, the openwork face set with an old cut diamond of 0.62 carats accented by step cut rubies and round cut diamonds, inscribed D 0.62 0.22 0.12 0.40, stamped PLAT, size M / 6.25, 5.9g.

Estimate £1,500 - £2,500

A PINK SAPPHIRE AND PEARL CLUSTER RING in 18ct yellow gold, set with a cushion cut pink sapphire of approximately 1.76 carats in a cluster of seed pearls, partial British hallmarks, size I / 4.25, 5.4g.

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of 1.43 carats in a cluster of round brilliant cut diamonds, inscribed 1.43, full British hallmarks, size N / 6.75, 4.9g.

Estimate £2,500 - £3,500

A 1.00 CARAT DIAMOND SOLITAIRE RING in 18ct yellow gold, set with a round brilliant cut diamond of 1.00 carats, inscribed 1.00, stamped 18ct, size P / 7.75, 1.0g.

Estimate £3,000 - £5,000

A DIAMOND CLUSTER RING set with a rose cut diamond in a border of round cut diamonds, accented by further rose cut and round cut diamonds, no assay marks, size O / 7.25, 9.1g.

Estimate £1,500 - £2,500

AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with three oval cut sapphires punctuated by pairs of old cut diamonds, stamped 18, size J / 4.75, 2.7g.

Estimate £1,200 - £1,600

A JADEITE JADE DRESS RING in 18ct yellow gold, set with a carved jadeite jade sphere, stamped 750, size N1/2 / 7, 20.2g.

Estimate £1,200 - £1,600

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a round cut ruby of 0.95 carats in a border of round brilliant cut diamonds, full British hallmarks, size N1/2 / 7, 4.9g.

Estimate £1,200 - £1,600

AN EMERALD AND DIAMOND HEART RING in 18ct yellow gold, set with a heart shaped cabochon emerald, the band set with round brilliant cut diamonds, full British hallmarks, size M / 6.25, 4.8g.

Estimate £600 - £800

AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with three cushion cut diamonds punctuated by pairs of old cut diamonds, stamped 18ct, size L1/2 / 6, 3.9g.

Estimate £500 - £700

OMEGA, A SMOKY QUARTZ AND DIAMOND DRESS RING in 18ct yellow gold, set with an oval cabochon smokey quartz, the claws accented by round cut diamonds, signed Omega, stamped 750, size N / 6.75, 13.1g.

Estimate £800 - £1,200

AN EMERALD AND DIAMOND DRESS RING in white and yellow gold, set with a step cut emerald of 1.28 carats in a border of round brilliant cut diamonds to an openwork band set throughout with round brilliant cut diamonds, stamped Au750, size O1/2 / 7.5, 8

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND RING in yellow gold, set with an oval cut sapphire of approximately 3.08 carats, accented by tapered baguette and princess cut diamonds, no assay marks, size M1/2 / 6.5, 4.9g.

Estimate £4,000 - £6,000

A VINTAGE DIAMOND DRESS RING in yellow gold, the domed band with an openwork circle set with round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 12.4g.

Estimate £800 - £1,200

MAUBOUSSIN, A BLACK PEARL RING in 18ct yellow gold, set with a black pearl of 9.5mm, signed Mauboussin, stamped 18k, size K1/2 / 5.5, 3.9g.

Estimate £800 - £1,200

A DIAMOND CLUSTER RING in white gold, set with a marquise cut diamond of approximately 0.50 carats in a border of round cut diamonds, no assay marks, size M / 6.25, 2.6g.

Estimate £500 - £700

A DIAMOND DRESS RING in platinum, set with three clusters of round brilliant cut diamonds in openwork geometric borders set with further round cut diamonds, the diamonds totalling 1.85 carats, stamped PT, size M / 6.25, 10.1g.

Estimate £1,500 - £2,500

A DIAMOND BOMBE RING in 18ct white gold, the bombe face set with round brilliant cut diamonds all totalling 3.8-4.0 carats, stamped 750, size M / 6.25, 8.0g.

Estimate £2,000 - £3,000

A CARVED EMERALD AND DIAMOND DRESS RING in 18ct white gold, set with a carved cabochon emerald of approximately 1.15 carats, accented by baguette and round brilliant cut diamonds and step cut emeralds, stamped 750, size N / 6.75, 5.0g.

Estimate £2,500 - £3,500

A DIAMOND AND ONYX TARGET RING in 18ct white gold, set to the centre with a round brilliant cut diamond of approximately 1.10 carats within a concentric border of polished onyx and single cut diamonds, the band pave set with further diamonds, stamped

Estimate £2,500 - £3,500

A PEARL, RUBY AND DIAMOND RING in yellow gold, in scrolling design set with a bronze pearl of 4.5mm, step cut rubies and rose cut diamonds, no assay marks, size P1/2 / 8, 3.7g.

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND CLUSTER RING in 18ct white gold, set with three round cut emeralds in borders of round cut diamonds, full British hallmarks, size L1/2 / 6, 3.5g.

Estimate £800 - £1,200

A RUBY AND DIAMOND THREE STONE RING in 18ct white gold, set with an oval cut ruby between two round brilliant cut diamonds, full British hallmarks, size O / 7.25, 3.1g.

Estimate £500 - £700

AN EMERALD AND DIAMOND DRESS RING in yellow gold, set with an oval cut emerald of approximately 1.98 carats in a border of round brilliant cut diamonds, no assay marks, size R / 8.75, 10.9g.

Estimate £2,000 - £3,000

A 1.05 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 1.05 carats, full British hallmarks, size M / 6.25, 5.8g.

Estimate £2,500 - £3,500

A DIAMOND FLOWER DRESS RING in 18ct yellow gold, the open band set on each side with a flower, the flowers set with marquise, pear and round brilliant cut diamonds all totalling 12.98 carats, stamped Au750, size N1/2 / 7, 29.0g.

Estimate £15,000 - £25,000

A YELLOW DIAMOND, DIAMOND AND SAPPHIRE BUTTERFLY RING in 18ct yellow and white gold, the body set with a marquise cut sapphire of approximately 1.39 carats, the wings set with four pear cut yellow diamonds, accented throughout with round cut white di

Estimate £1,500 - £2,500

A MULTICOLOURED DIAMOND BOMBE RING in 18ct white gold, the bombe face set with panels of round cut white, yellow, green, orange and pink diamonds, full British hallmarks, size M1/2 / 6.5, 19.7g.

Estimate £1,500 - £2,500

A PERIDOT AND SAPPHIRE DRESS RING in platinum, set with an oval cut peridot of approximately 7.53 carats accented by round cut sapphires, stamped Pt900, size L1/2 / 6, 14.1g.

Estimate £1,500 - £2,500

A GEMSET JOLLY RODGER RING in 18ct yellow gold, designed as a Jolly Rodger set with black diamonds, pink sapphires, round cut emerald and a cabochon ruby, stamped K18, size S / 9.25, 7.4g.

Estimate £400 - £600

A DIAMOND DRESS RING in 18ct white gold, pave set with round brilliant cut diamonds, the diamonds totalling 2.8-3.0 carats, stamped 18k, size N / 6.75, 16.8g.

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND CLUSTER RING in platinum, set with an oval cut emerald of 0.78 carats in a cluster of round brilliant cut diamonds, inscribed 0.78, full British hallmarks, size L1/2 / 6, 6.3g.

Estimate £2,000 - £3,000

AN AQUAMARINE AND DIAMOND CLUSTER RING in yellow gold, set with an oval cut aquamarine of approximately 8.10 carats in a cluster of round cut diamonds all totalling 1.8-2.0 carats, no assay marks, size O / 7, 8.3g.

Estimate £2,500 - £3,500

A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 0.75 carats, the infinity style shoulders set with round cut diamonds, full British hallmarks, size M / 6.25, 3.7g.

Estimate £1,000 - £1,500

SOLANGE AZAGURY-PARTRIDGE, A GEMSET BAND RING in 18ct blackened gold, the convex band set to both sides with rows of round cut rubies, pink, purple and green sapphires and white, blue, orange and yellow diamonds, maker's mark, full British hallmarks,

Estimate £2,000 - £3,000

A BLUE TOPAZ AND DIAMOND DRESS RING in 18ct white gold, set with a mixed cushion cut blue topaz accented by round cut diamonds, stamped 750, size M / 6.25, 9.9g.

Estimate £600 - £800

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with a round brilliant cut diamond of approximately 1.02 carats in a cluster of round cut sapphires, the sapphires totalling 3.05 carats, stamped 18k, size L1/2 / 6, 6.7g

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with a cushion cut sapphire of 1.85 carats in a double border of round brilliant cut diamonds, the band set with further diamonds, stamped PT950, size L1/2 / 6, 7.5g.

Estimate £3,000 - £5,000

A DIAMOND CLUSTER RING in 18ct white gold, set with a fancy cut diamond of approximately 0.51 carats in a double border of round cut diamonds, further round cut diamonds accenting the band, full British hallmarks, size N / 6.75, 3.4g.

Estimate £1,000 - £1,500

A SAPPHIRE AND DIAMOND FLOWER RING in white gold, set to the centre with a round cut diamond in a cluster of heart shaped diamonds, the petals set with round cut sapphires and round cut diamonds, no assay marks, size M / 6.25, 13.2g.

Estimate £1,200 - £1,600

A DIAMOND BAND RING in 18ct white gold, designed as a series of interlocking curb links, half of which are pave set with round brilliant cut diamonds, stamped 750, M / 6.25, 7.6g.

Estimate £1,000 - £1,500

A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 1.00 carat, full British hallmarks, size J / 4.75, 5.3g.

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut emerald of approximately 1.27 carats in a cluster of alternating baguette and round brilliant cut diamonds, stamped 750, size N / 6.75, 4.6g.

Estimate £1,500 - £2,500

A DIAMOND CLUSTER RING in 18ct white gold, set with a round cut diamond in a border of trillion cut diamonds, the diamonds all totalling 1.13 carats, full British hallmarks, size M / 6.25, 4.6g.

Estimate £800 - £1,200

BULGARI, A B.ZERO 1 RING in 18ct white gold, the band with engraved lettering 'BVLGARI' to the sides, signed Bvlgari and numbered, stamped 750, size R1/2 / 9, 8.1g.

Estimate £400 - £600

AN EMERALD, RUBY AND DIAMOND RING in 18ct white gold, set with a cushion cut emerald of approximately 1.91 carats in a border of round cut rubies, the band set with round brilliant cut diamonds, full British hallmarks, size M / 6.25, 4.9g.

Estimate £1,500 - £2,500

A GREEN TOURMALINE, MORGANITE AND DIAMOND DRESS RING in 18ct rose gold, set with a cushion cut green tourmaline of approximately 4.50 carats between two cushion cut morganites both totalling 3.0-3.5 carats, within a border of round brilliant cut diam

Estimate £1,500 - £2,500

A MORGANITE AND DIAMOND RING in 18ct rose gold, set with an octagonal step cut morganite of 2.13 carats, the band pave set with round brilliant cut diamonds, full British hallmarks, size M / 6.23, 3.6g.

Estimate £800 - £1,200

A DIAMOND SOLITAIRE RING in 18ct white gold, set with a round brilliant cut diamond of approximately 1.06 carats, full British hallmarks, size H / 3.75, 2.3g.

Estimate £2,500 - £3,500

A GOLDEN TOPAZ AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut golden topaz of 2.27 carats in a cluster of round brilliant cut diamonds, stamped 750, size N / 6.75, 6.2g.

Estimate £1,500 - £2,500

A DIAMOND CLUSTER RING in 18ct white gold, set with a cluster of round brilliant cut diamonds, stamped 18k, size M / 6.25, 4.5g.

Estimate £500 - £700

A PINK TOURMALINE AND DIAMOND DRESS RING in 18ct rose gold, set with an emerald cut pink tourmaline of 5.54 carats accented by baguette cut diamonds in a border of round brilliant cut diamonds, the diamonds all totalling 1.09 carats, full British hal

Estimate £2,000 - £3,000

A DIAMOND DRESS RING in 18ct rose gold, comprising five interlocking bands set with round cut and baguette cut diamonds, stamped 18k 750, size N / 6.75, 11.3g.

Estimate £1,200 - £1,600

BROWNS, A BLUE TOPAZ AND DIAMOND RING in 9ct yellow gold, set with an oval cut blue topaz accented by trios of round cut diamonds, signed Browns, stamped 375, size J / 4.75, 3.1g.

Estimate £300 - £500

A DIAMOND THREE STONE RING in 18ct white gold, set with a radiant cut diamond of 1.07 carats between two round brilliant cut diamonds, full British hallmarks, stamped Au750, size N / 7, 3.0g.

Estimate £1,000 - £1,500

AN AQUAMARINE AND DIAMOND CLUSTER RING in platinum and 18ct yellow gold, set with an octagonal step cut aquamarine of approximately 2.47 carats in a border of round brilliant cut diamonds, stamped 18CT PLAT, size N / 6.75, 4.5g.

Estimate £800 - £1,200

A RUBY AND DIAMOND CLUSTER RING in platinum, set with an oval cut ruby of 2.27 carats in a double border of round brilliant cut diamonds, accented by tapered baguette cut diamonds, stamped Pt900, size L / 5.75, 6.6g.

Estimate £1,000 - £1,500