SOLANGE AZAGURY-PARTRIDGE, A DIAMOND AND ENAMEL MARQUISE RING in 18ct yellow and white gold, the triangular ring set with a trillion cut diamond over a ground of purple guilloche enamel, in a border of further trillion cut diamonds, SAP maker's mark,

Estimate £3,000 - £5,000

DAVID WEBB, A ROCK CRYSTAL AND ENAMEL RING in 18ct yellow gold, set with a faceted rock crystal accented by sections of black enamel, signed Webb, stamped 18K, size M1/2 / 6.5, 27.0g. 

Estimate £4,500 - £5,500

A PADPARADSCHA SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut padparadscha sapphire of 1.23 carats in a cluster of round brilliant and pear cut diamonds, stamped PLAT, size J / 4.75, 5.0g. Accompanied by a gemmological report sta

Estimate £6,000 - £8,000

ELIZABETH GAGE, AN ENAMEL AND DIAMOND FLEUR DE LIS RING in 18ct yellow gold, the wide band relieved in blue enamel, accented by round cut diamonds and fleur de lis motifs, signed Gage, full British hallmarks, size N1/2 / 7, 14.2g. Please note that th

Estimate £600 - £800

CARTIER, A FINE EMERALD AND DIAMOND RING in platinum, set with an oval cabochon emerald of approximately 1.95 carats, accented by round brilliant and baguette cut diamonds, the diamonds all totalling 4.0-5.0 carats, signed Cartier and numbered, stamp

Estimate £15,000 - £20,000

A 4.01 CARAT SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a round brilliant cut diamond of 4.01 carats, the band set with round brilliant cut diamonds, partial British hallmarks, size M / 6.25, 6.9g. 

Estimate £20,000 - £30,000

A RUBY AND DIAMOND THREE STONE RING in platinum, set with an oval cut ruby of approximately 3.28 carats accented on each side by an old cut diamond, stamped PLATINUM, size O / 7.25, 3.3g. 

Estimate £1,500 - £2,500

MAPIN & WEBB, A DIAMOND DRESS RING in 18ct white gold, in a stylised cross over design, set with round brilliant cut diamonds, M&W maker's mark, full British hallmarks, size N / 6.75, 15.5g. 

Estimate £1,000 - £1,500

A TANZANITE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut tanzanite of 16.33 carats in a double border of round brilliant cut diamonds, the diamonds all totalling 2.2-2.4 carats, no assay marks, size O / 7.25, 11.4g. 

Estimate £3,000 - £5,000

LALAOUNIS, A GEMSET LION RING in 18ct yellow gold, designed as a coiled lion, the eyes set with round cut rubies, the collar set with rose cut diamonds and the spine accented by three round cut sapphires, signed Lalaounis, stamped 750, size H1/2 / 4,

Estimate £1,200 - £1,800

AN AMETHYST DRESS RING in yellow gold, set with a fancy cut amethyst, no assay marks, size M / 6.25, 11.4g. 

Estimate £600 - £800

A DIAMOND TOI ET MOI RING in 18ct yellow gold, set with two pear cut diamonds both totalling 1.23 carats, the band accented by round brilliant cut diamonds, inscribed 1.23 0.28, stamped 750, size K / 5.25, 3.1g. 

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND LILY RING in platinum and 18ct yellow gold, designed as a peace lily set with an octagonal step cut emerald and round brilliant cut diamonds, stamped Pt900 18K, size L / 5.75, 10.2g.

Estimate £1,000 - £1,500

A RUBY AND DIAMOND THREE STONE RING in 18ct yellow gold, set with an oval cut ruby of approximately 1.20 carats accented on each side by an old cut diamond, the diamonds totalling 0.7-0.8 carats, partial British hallmarks, size O / 7.25, 5.2g. 

Estimate £4,000 - £6,000

AN ANTIQUE VICTORIAN PEARL AND DIAMOND SWEETHEART RING in yellow gold, comprising two heart motifs set with pearls in borders of old cut diamonds, surmounted by a bow motif set with further diamonds, no assay marks, size N / 6.75, 5.7g. 

Estimate £3,000 - £5,000

AN EMERALD AND DIAMOND TOI ET MOI RING in 18ct yellow gold, set with a pear cut emerald and a pear cut diamond, the openwork band pave set with round brilliant cut diamonds, stamped K18, size K / 5.25, 7.2g. 

Estimate £2,500 - £3,500

A CEYLON NO HEAT PINK SAPPHIRE AND DIAMOND THREE STONE RING in 18ct yellow gold, set with a cushion cut pink sapphire of approximately 1.85 carats, accented on each side by a trillion cut diamond, stamped 18K, size X / 11.5, 17.4g. Accompanied by a g

Estimate £2,000 - £3,000

A DIAMOND DRESS RING in white gold, the tapering ring set with clusters of round brilliant and marquise cut diamonds, the diamonds all totalling 2.8-3.0 carats, no assay marks, sizing band size O1/2 / 7.5, 10.4g. 

Estimate £1,500 - £2,500

CHOPARD, A DIAMOND HAPPY SPIRIT RING in 18ct yellow gold, the circular face comprising a white sapphire locket containing two circular gold discs and a free moving round brilliant cut diamond, inscribed HAPPY SPIRIT, signed Chopard and numbered, stam

Estimate £1,200 - £1,600

A DIAMOND RING in 18ct white gold, set with an emerald cut diamond of 2.20 carats, the band set with a row of baguette cut diamonds, the gallery accented by round brilliant cut diamonds, stamped K18, size N / 6.75, 5.9g.  Guaranteed UK Mainland C

Estimate £6,000 - £8,000

A DIAMOND FIVE STONE RING in 18ct white gold, set with five round brilliant cut diamonds all totalling 2.56 carats, inscribed 5/2.56, stamped 18K, size K1/2 / 5.5, 5.7g. 

Estimate £2,500 - £3,500

A MODERNIST AMETHYST AND DIAMOND RING in yellow gold, set with an octagonal step cut amethyst of approximately 17.49 carats, accented by round brilliant cut diamonds, no assay marks, size N1/2 / 7, 26.4g.

Estimate £1,000 - £1,500

A TSAVORITE GARNET AND DIAMOND RING in yellow gold, set with a cluster of cabochon tsavorite garnets, accented by round brilliant cut diamonds, no assay marks, size N / 6.75, 5.5g. 

Estimate £600 - £800

VAN CLEEF & ARPELS, A DIAMOND BOMBE RING in 18ct yellow gold, pave set with round brilliant cut diamonds, signed Van Cleef & Arpels NY and numbered, no assay marks, size L / 5.75, 3.4g. 

Estimate £3,500 - £4,500

A FIVE STONE RUBY AND DIAMOND RING in yellow gold, set with cushion and round cut rubies accented by round brilliant cut diamonds, the rubies all totalling 1.9-2.0 carats, the diamonds all totalling 0.7-0.8 carats, no assay marks, size O / 7.25, 5.1g

Estimate £1,500 - £2,500

NO RESERVE - AN UNHEATED RUBY GYPSY RING in yellow gold, set with an oval cut ruby of 1.17 carats, no assay marks, size L / 5.75, 6.7g. Accompanied by a gemmological report stating the ruby shows no indication of heat treatment. 

Estimate £1,200 - £1,600

AN EMERALD AND DIAMOND DRESS RING in platinum, set with an octagonal step cut emerald of 1.55 carats, accented by round brilliant cut diamonds, inscribed E1.55 D0.70, stamped Pt900, size L1/2 / 6, 5.9g. 

Estimate £2,500 - £3,500

A DIAMOND FULL ETERNITY RING in 18ct white gold, set all around with a row of emerald cut diamonds all totalling 4.61 carats, inscribed D4.61 carats, stamped 18K 750, size O / 7.25, 5.0g. 

Estimate £4,000 - £6,000

MAUBOUSSIN, A VINTAGE DIAMOND CROSS OVER DRESS RING in 18ct yellow gold, pave set to one side of a stylised band with round brilliant cut diamonds, signed MAUBOUSSIN PARIS, stamped 750, size K1/2 / 5.5, 12.8g.

Estimate £1,000 - £1,500

A GOLDEN ZIRCON AND DIAMOND DRESS RING in yellow gold, set with a cushion cut golden zircon in an openwork border set with old and rose cut diamonds, no assay marks, size M / 6.25, 17.6g. 

Estimate £2,000 - £3,000

A DIAMOND THREE STONE RING in platinum, set with an emerald cut diamond of 5.33 carats between two baguette cut diamonds both totalling 1.10 carats, partial British hallmarks, size N / 6.75, 10.5g. 

Estimate £25,000 - £35,000

THREE GEMSET FULL ETERNITY RINGS in 18ct white gold, one set all around with a row of round brilliant cut diamonds, one set all around with square step cut rubies, and one set all around with square step cut sapphires, each stamped 750, sapphire and

Estimate £1,500 - £2,500

A 3.33 CARAT BRAZILIAN ALEXANDRITE AND DIAMOND CLUSTER RING in platinum, set with an oval cut alexandrite of 3.33 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 2.2-2.5 carats, stamped PLAT, size K1/2 / 5.5, 13.3g. Ac

Estimate £80,000 - £120,000

JEAN SCHLUMBERGER FOR TIFFANY & CO., A CITRINE DRESS RING in 18ct yellow gold, the bombe face set with an octagonal step cut citrine, signed Schlumberger, signed Tiffany & Co., stamped 18K, size L / 5.75, 14.3g. 

Estimate £3,500 - £4,500

A SAPPHIRE AND DIAMOND RING in 18ct white gold, set with an oval faceted sapphire of approximately 10.63 carats, stamped 18K, size M / 6.25, 7.8g. 

Estimate £6,000 - £8,000

A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of 5.68 carats, stamped PT950, size M / 6.25, 11.5g. 

Estimate £25,000 - £30,000

AN AQUAMARINE AND DIAMOND RING in 18ct white gold, set with a cushion cut aquamarine of 14.29 carats in a border of round brilliant and baguette cut diamonds, the band set with further diamonds, stamped 750, size N / 6, 10.5g.

Estimate £1,500 - £2,500

A RUBY AND DIAMOND CLUSTER RING in white gold, set with a cushion cut ruby of approximately 1.04 carats in a cluster of old cut diamonds, the shoulders set with trios of old cut diamonds, no assay marks, size L / 5.75, 2.9g. 

Estimate £1,500 - £2,500

A DIAMOND FULL ETERNITY RING in platinum, all around with round brilliant cut diamonds all totalling 3.25 carats, inscribed D:3.25ct, stamped PT950, size Q1/2 / 8.25, 5.9g.

Estimate £1,500 - £2,500

A DIAMOND HALO ENGAGEMENT RING in platinum, set with an oval cut diamond of 0.51 carats in a border of round brilliant cut diamonds, the band half set with further round brilliant cut diamonds, no assay marks, size M / 6.25, 4.0g. Accompanied by a ge

Estimate £800 - £1,200

CARTIER, A RUBY AND DIAMOND MAILLON PANTHERE RING in 18ct yellow gold, set with an oval cut ruby, the maillon links accented by round brilliant cut diamonds, signed Cartier and numbered, French maker's mark, French assay marks, size K1/2 / 5.5, 16.5g

Estimate £6,000 - £8,000

A FRENCH MICRO MOSAIC RING in 18ct yellow gold, the round face set with pieces of coloured glass to depict a bird amongst foliage, the shoulders accented by oval cut sapphires, French assay marks, size P / 7.75, 13.1g. 

Estimate £1,000 - £1,500

A BLACK OPAL AND DIAMOND RING in yellow gold, set with a pear shaped cabochon black opal of 6.18 carats in a border of rose cut diamonds, the shoulders in foliate design, marked indistinctly, size N / 6.75, 7.1g. Accompanied by a facsimile gemmologic

Estimate £2,000 - £3,000

VHERNIER, A ROCK CRYSTAL AND TURQUOISE ALADINO COCKTAIL RING in 18ct yellow gold, set with a slice of turquoise beneath a polished rock crystal dome, signed Vhernier and numbered, stamped 750, size N / 6.75, 23.7g. 

Estimate £2,000 - £3,000

A VERY FINE BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in yellow gold, set with a cushion cut ruby of 2.30 carats in a border of old cut diamonds, the diamonds all totalling 1.2-1.5 carats, no assay marks, size N1/2 / 7, 4.3g. Accompanied by a facsi

Estimate £25,000 - £35,000

A BURMA NO HEAT PINK SAPPHIRE AND DIAMOND RING in platinum, set with an octagonal step cut pink sapphire of 3.08 carats in a double border of round brilliant cut diamonds, the band set with further diamonds, full British hallmarks, size M / 6.25, 9.1

Estimate £10,000 - £15,000

AN ANTIQUE VICTORIAN SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with three round cut sapphires in a cluster of old cut diamonds, full British hallmarks for London 1891, size N / 6.75, 4.4g.

Estimate £1,000 - £1,500

A VINTAGE RUBY AND DIAMOND RING in 18ct yellow gold, set with three cushion cut rubies, punctuated by pairs of old cut diamonds, stamped 18CT, size P / 7.5, 4.0g.

Estimate £300 - £500

A RUBY AND DIAMOND CLUSTER RING in platinum, set with an oval cut ruby of 1.61 carats in a stylised cluster of marquise, baguette and round brilliant cut diamonds, stamped Pt900, size L / 5.75, 7.4g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of 3.74 carats in a double cluster of round brilliant cut diamonds, stamped 750, size K / 5.25, 5.5g. 

Estimate £3,000 - £5,000

A SAPPHIRE, EMERALD AND DIAMOND BAND RING in 18ct white gold, set with an oval cut sapphire, an oval and marquise cut emerald, and round brilliant cut diamonds, no assay marks, size M / 6.25, 2.7g.  

Estimate £800 - £1,200

A FINE OPAL AND DIAMOND SWEETHEART RING in yellow gold and silver, designed to depict a heart surmounted by a crown / coronet, the heart set with a cabochon opal in a border of old cut diamonds, the coronet further set with old cut diamonds, no assay

Estimate £2,000 - £3,000

A PINK SAPPHIRE, EMERALD AND DIAMOND RING in 18ct white gold, the crossover band set with a pear cut pink sapphire and a cushion cut emerald, accented by round brilliant and baguette cut diamonds, stamped 750, L1/2 / 6, 5.7g. 

Estimate £2,000 - £3,000

AN ANTIQUE FRENCH CARNELIAN INTAGLIO RING in 18ct yellow gold, set with a carnelian intaglio carved to depict a classical man, cameo signed Lazci, French assay marks, size P / 7.75, 4.0g. 

Estimate £1,200 - £1,600

NO RESERVE - AN AGATE INTAGLIO RING in yellow gold, set with an agate intaglio carved to depict mythological figures, no assay marks, size O / 7.25, 7.3g. 

Estimate £500 - £700

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of approximately 1.72 carats in a cluster of single cut diamonds, stamped 18CT, size N / 6.75, 2.6g. 

Estimate £1,200 - £1,600

A MABE PEARL, ONYX AND DIAMOND DRESS RING in 18ct yellow gold, set with a mabe pearl accented by carved onyx and rows of round brilliant cut diamonds, stamped 750, size M / 6.25, 17.7g. 

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold and platinum, the circular face set with pattern of step cut sapphires and round cut diamonds, further diamonds accenting the band, stamped 18ct PLAT, size N / 7, 4.2g. 

Estimate £600 - £800

A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 0.80 carats, accented on each side by further round brilliant cut diamonds, full British hallmarks, size J / 4.75, 3.3g.

Estimate £1,500 - £2,500

A BURMA NO HEAT SPINEL AND DIAMOND CLUSTER RING in 18ct white gold, set with a cushion cut spinel of 9.32 carats, in a cluster of baguette and round brilliant cut diamonds, the diamonds all totalling 1.1-1.2 carats, stamped 750, size N1/2 / 7, 8.1g.

Estimate £15,000 - £20,000

A BRAZILIAN ALEXANDRITE AND DIAMOND RING in platinum, set with an oval cut alexandrite of 0.88 carats between two pear cut diamonds, stamped PT, size Q / 8, 6.0g. Accompanied by a facsimile GIA report stating that the alexandrite is of Brazilian orig

Estimate £6,000 - £8,000

AN EMERALD AND DIAMOND THREE STONE RING in platinum, set with an octagonal step cut emerald of approximately 1.02 carats between two princess cut diamonds, the diamonds both totalling approximately 0.60 carats, no assay marks, size M1/2 / 6.5, 2.6g. 

Estimate £2,000 - £3,000

LYDIA COURTEILLE, AN AMETHYST, JADEITE JADE, GREEN GARNET AND DIAMOND COCKTAIL RING in 18ct blackened gold, set with a large oval facetted amethyst, accented by carved jadeite jade flower and vines set with green garnets and diamonds, maker's mark, F

Estimate £6,000 - £8,000

A GLASS-FILLED RUBY AND DIAMOND THREE STONE RING in 18ct white gold, set with an oval cut glass-filled ruby of 2.41 between two round brilliant cut diamonds of 0.46 and 0.43 carats, stamped 750, size O / 7, 4.4g. 

Estimate £2,000 - £3,000

A CEYLON NO HEAT COLOUR CHANGE SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an octagonal step cut sapphire of 7.64 carats between two old cut diamonds, the diamonds both totalling 1.13 carats, partial British hallmarks, size J1/2 / 5,

Estimate £10,000 - £15,000

A SAPPHIRE AND DIAMOND RING in platinum, set with an oval cut sapphire of 6.75 carats, the shoulders set with round brilliant cut diamonds, stamped Pt900, size L / 5.75, 6.9g. 

Estimate £5,000 - £7,000

AN EMERALD AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut emerald of 1.63 carats in a cluster of round brilliant cut diamonds, stamped 750, size M / 6.25, 5.2g. 

Estimate £1,200 - £1,600

AN ANTIQUE RUBY AND DIAMOND CLUSTER RING in yellow gold and silver, set with a round cut ruby of approximately 0.46 carats in a cluster of old cut diamonds, no assay marks, size I1/2 / 4.5, 2.0g. 

Estimate £600 - £800

NO RESERVE - A PINK SAPPHIRE RING in yellow gold, set with a cushion cut pink sapphire of approximately 1.30 carats, Portuguese assay marks, size J / 4.75, 3.5g. 

Estimate £1,000 - £1,500

NO RESERVE - A SAPPHIRE AND DIAMOND CLUSTER RING in white gold, set with an oval cabochon sapphire of approximately 2.10 carats in a cluster of single cut diamonds, no assay marks, size K1/2 / 5.5, 5.3g. 

Estimate £800 - £1,200

A RUBY AND DIAMOND DRESS RING in platinum, set to the centre with an oval cut ruby of 2.10 carats in a stylised geometric surround of single cut diamonds and calibre cut rubies, the bifurcated shoulders set with further single cut diamonds, inscribed

Estimate £800 - £1,200

BOODLES, A TANZANITE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a cushion cut tanzanite of 5.76 carats in a border of round brilliant cut diamonds, stamped 5.76, signed Boodles, full British hallmarks, size K / 5.25, 7.2g. 

Estimate £3,000 - £5,000

A SAPPHIRE AND DIAMOND FIVE STONE RING in 18ct white gold, set with three round cut sapphires and two round brilliant cut diamonds, stamped 750, size L1/2 / 6, 5.4g. 

Estimate £800 - £1,200

A HEART SHAPED DIAMOND SOLITAIRE RING in 18ct white gold, set with a heart cut diamond of approximately 4.11 carats, full British hallmarks, size L1/2 / 6, 4.7g. 

Estimate £12,000 - £16,000

A FRENCH GREEN GLASS INTAGLIO RING in 18ct yellow gold, set with a green glass intaglio molded to depict a classical man, French assay marks, size L / 5.75, 5.2g. 

Estimate £600 - £800

A TANZANITE AND DIAMOND CLUSTER RING in platinum, set with a round cut tanzanite of 8.04 carats in a double border of round brilliant cut diamonds, stamped PT950, size O1/2 / 7.5, 11.8g. 

Estimate £2,000 - £3,000

A 6.11 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a marquise cut diamond of 6.11 carats, the shoulders accented by baguette cut diamonds, stamped 950, size P1/2 / 8, 6.1g. 

Estimate £15,000 - £25,000

A DIAMOND CLUSTER RING in white gold, set with a round brilliant cut diamond in a cluster of marquise cut diamonds, the diamonds all totalling approximately 1.00 carat, no assay marks, size J1/2 / 5, 5.4g. 

Estimate £1,000 - £1,500

A RUBY AND DIAMOND CROSSOVER RING in white gold, set to each end with an oval cut ruby of 4.60 carats and an oval cut diamond of 0.75 carats, the band pave set with round brilliant cut diamonds and round cut rubies, no assay marks, size M / 6.25, 6.9

Estimate £800 - £1,200

AN EMERALD AND DIAMOND CLUSTER RING in yellow gold, set with a cushion cut emerald of approximately 1.20 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.3-1.4 carats, marked indistinctly, size N1/2 / 7, 4.6g. 

Estimate £3,000 - £5,000

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of 4.11 carats in a cluster of round brilliant cut diamonds, stamped 750, size M1/2 / 6.5, 5.0g. 

Estimate £2,500 - £3,500

A 25.28 CARAT SPINEL RING in platinum, set with a cushion cut spinel of 25.28 carats, stamped Pt900, size M / 6.25, 12.5g. 

Estimate £30,000 - £50,000

AN ALEXANDRITE AND DIAMOND RING in platinum, set with an oval cut alexandrite of 1.85 carats, accented by baguette and round brilliant cut diamonds, stamped Pt900, size M / 6.25, 9.7g. Accompanied by a gemmological report stating that the alexandrite

Estimate £30,000 - £35,000

A RUBY AND DIAMOND DRESS RING in platinum, the spherical ring pave set with round cabochon rubies, the scrolling shoulders set with single cut diamonds, no assay marks, size L / 5.75, 12.7g. 

Estimate £2,000 - £3,000

BULGARI, A BLUE TOPAZ PYRAMID RING in 18ct white gold, set with a sugarloaf cabochon blue topaz, signed Bulgari, stamped 750, size K / 5.25, 15.5g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND RING in 18ct yellow gold, set with an oval cut ruby of approximately 1.58 carats, the band accented by rows of round brilliant and princess cut diamonds, the diamonds all totalling 1.0-1.1 carats, stamped 750, size L / 5.75, 5.3g. 

Estimate £4,000 - £6,000

A RUBY AND DIAMOND CLUSTER RING in 14ct white gold, set with three oval cut rubies totalling 1.9-2.1 carats, surrounded by a cluster of round brilliant cut diamonds all totalling 1.5-1.7 carats, stamped 585, size M / 6, 7.1g.

Estimate £1,000 - £1,500

NO RESERVE - A SYNTHETIC PURPLE SAPPHIRE AND DIAMOND RING in yellow gold, set with an oval cut synthetic purple sapphire to diamond set shoulders, no assay marks, size M1/2 / 6.5, 8.4g. 

Estimate £100 - £150

A GOLDEN ZIRCON AND DIAMOND RING in white gold, set with a cushion cut golden zircon of approximately 21.03 carats, the stepped shoulders set with round cut diamonds, no assay marks, size O1/2 / 7.5, 6.8g.

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND RING in platinum, set with an octagonal step cut sapphire of 2.69 carats, accented by pairs of marquise cut diamonds and a row of baguette cut diamonds, stamped Pt900, size L / 5.75, 7.0g. 

Estimate £1,500 - £2,500

A BURMA NO HEAT RUBY AND DIAMOND THREE STONE RING in platinum and 18ct yellow gold, set with an oval cut ruby of 3.05 carats accented on each side by a trillion cut diamond, stamped PLAT 18K, size K1/2 / 5.5, 8.1g. Accompanied by a facsimile gemmolog

Estimate £15,000 - £20,000

A DIAMOND HALF ETERNITY RING in 18ct white gold, set with a row of baguette cut diamonds between rows of round brilliant cut diamonds, partial British hallmarks, size O / 7.25, 7.1g. 

Estimate £1,000 - £1,500

AN EMERALD AND DIAMOND CLUSTER RING in platinum, set with a square step cut emerald in a cluster of round brilliant cut diamonds, the shoulders accented by baguette cut diamonds, stamped Pt900, size L / 5.75, 5.8g. 

Estimate £800 - £1,200

A MODERNIST AMETHYST AND DIAMOND DRESS RING in 18ct white gold, the modernist ring set with an octagonal step cut amethyst accented by three round brilliant cut diamonds, stamped 18, size M1/2 / 6, 21.2g. 

Estimate £800 - £1,200

A PINK SAPPHIRE AND DIAMOND RING in 18ct white gold, set with a row princess cut pink sapphires between two double rows of round brilliant cut diamonds, stamped 18K 750, size O1/2 / 7.5, 9.6g.

Estimate £800 - £1,200

A SOLITAIRE DIAMOND RING in 18ct white gold, set with a radiant cut diamond of 1.53 carats, partial British hallmarks, size M / 6.25, 3.0g. 

Estimate £3,000 - £5,000

A NATURAL BLISTER PEARL AND DIAMOND DRESS RING in yellow gold, set with a baroque blister pearl in a stylised border set with round cut diamonds, no assay marks, size O / 7.25, 12.3g. 

Estimate £5,000 - £7,000

AN ANTIQUE OPAL AND DIAMOND CLUSTER RING in yellow gold, set with a cabochon opal in a cluster of rose cut diamonds, inscribed 'C.H Mc G.', no assay marks, size K1/2 / 5.5, 1.5g. 

Estimate £300 - £500