AN AQUAMARINE AND DIAMOND RING in white gold, set with an oval mixed cut aquamarine of 12.52 carats accented by trios of round brilliant cut diamonds, no assay marks, size O1/2 / 7.5, 7.9g. 

Estimate £2,000 - £3,000

AN ANTIQUE GREEN TOURMALINE AND DIAMOND RING, EARLY 20TH CENTURY set with a cushion cut green tourmaline of approximately 3.08 carats, the band accented by single cut diamonds, no assay marks, size I / 4.25, 3.8g. 

Estimate £2,000 - £3,000

A DIAMOND THREE STONE RING in platinum, set with three old European cut diamonds of 0.93, 1.70 and 1.02 carats, the diamonds all totalling 3.65 carats, British hallmarks, size M1/2 / 6.5, 6.6g.

Estimate £8,000 - £12,000

HANCOCKS & CO, AN IMPORTANT 4.39 CARAT SOLITAIRE DIAMOND RING in platinum, set with an emerald cut diamond of 4.39 carats accented by two tapering baguette cut diamonds, maker's mark for Hancocks, full British hallmarks, size L / 5.75, 5.7g. Accompan

Estimate £40,000 - £60,000

A RETRO FRENCH DIAMOND DRESS RING in 18ct yellow gold and platinum, the stylised head set with a row of graduated old cut diamonds, French assay marks, size J1/2 / 5, 11.1g.

Estimate £500 - £700

MITZI CUNLIFFE FOR CARTIER, A VINTAGE EMERALD DRESS RING in 18ct yellow gold, set with a cabochon cut emerald of approximately 12.50 carats, to a stylised band, with an inner sizing band partly obscuring marks, signed Mitzi Cunliffe and Cartier 1988,

Estimate £8,000 - £12,000

AN AQUAMARINE DRESS RING in 18ct yellow gold, set with an octagonal step cut emerald of approximately 40.00 carats to a stylised scrolling mount, stamped 750, size Q / 8.25, 31.0g. 

Estimate £4,000 - £6,000

A RETRO PEARL, RUBY AND DIAMOND DRESS RING in rose and white gold, set with four pearls accented by French cut rubies and old cut diamonds, no assay marks, sizing band, size L1/2 / 6, 13.1g.

Estimate £800 - £1,200

A SAPPHIRE INTAGLIO SEAL GYPSY RING in 18ct yellow gold, set with a cushion shaped sapphire intaglio carved to depict a coat of arms surmounted by a coronet, stamped 750, size N1/2 / 7, 13.1g. 

Estimate £4,000 - £6,000

A RUBY AND DIAMOND BOMBE RING in yellow gold, the bombe face set with round cut rubies and round brilliant cut diamonds, no assay marks, size I / 4.25, 11.7g. 

Estimate £1,200 - £1,600

A FINE ANTIQUE DIAMOND RING, 19TH CENTURY in yellow gold and silver, set with an old cut diamond of approximately 1.02 carats in an open work border set with further old cut diamonds, no assay marks, size P1/2 / 7.75, 3.6g. 

Estimate £3,000 - £5,000

AN ANTIQUE MOONSTONE, RUBY AND DIAMOND RING in yellow gold, set with a round cabochon moonstone in a border of alternating cushion cut rubies and rose cut diamonds, no assay marks, size Q / 8.25, 5.4g. 

Estimate £2,500 - £3,500

AN ANTIQUE CORAL AND DIAMOND RING, EARLY 20TH CENTURY in 14ct yellow gold, the oval face set with a cabochon coral and an old cut diamond accented by further old cut diamonds, partial British hallmarks, size N1/2 / 3.9g.

Estimate £1,500 - £2,000

A DIAMOND HALF HOOP RING in yellow gold, set with four principal old cut diamonds of approximately 1.36, 1.30, 0.86 and 0.83 carats, accented by single cut diamonds, the diamonds totalling 4.5-4.7 carats, stamped Or, size R / 8.75, 10.1g.

Estimate £10,000 - £15,000

A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 4.85 carats, marked indistinctly, size N / 7.5, 4.0g. 

Estimate £25,000 - £35,000

AN ANTIQUE FRENCH DIAMOND AND ROCK CRYSTAL MOURNING RING, 19TH CENTURY in yellow gold, the oval face comprising a panel of hairwork, topped by a rock crystal with applied initials 'SA' set with rose cut diamonds, in a border of further rose cut diamo

Estimate £1,000 - £1,500

A FINE INVISIBLY SET SAPPHIRE BOMBE RING in 18ct white gold, the domed face set with rows of invisibly set square step cut sapphires, stamped 18K, size L / 5.75, 9.1g. 

Estimate £4,000 - £6,000

GRAFF, AN IMPORTANT 5.05 CARAT G COLOUR, VS1 SOLITAIRE DIAMOND RING in platinum, set with an emerald cut diamond of 5.05 carats between tapered baguette cut diamonds, signed GRAFF, stamped PT 900, size L1/2 / 6, 7.2g. Accompanied by a gemmological re

Estimate £100,000 - £150,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with a cushion cut sapphire of 3.04 carats between two round brilliant cut diamonds both totalling 1.0-1.2 carats, partial British hallmarks, size N1/2 / 7, 5.5g. Accompanied by

Estimate £4,000 - £6,000

A BLUE, PINK AND YELLOW DIAMOND DRESS RING in 18ct white gold, set with a heart shaped blue diamond of 1.00 carat, a heart shaped pink diamond of 0.61 carats and a cushion cut yellow diamond of 0.85 carats, full British hallmarks, size K1/2 / 5.5, 5.

Estimate £20,000 - £30,000

A FINE UNHEATED RUBY AND DIAMOND RING in platinum, set with a cushion cut ruby of 4.65 carats, the shoulders accented by single cut diamonds, partial British hallmarks, French import marks, size Q / 8.25, 4.4g. Accompanied by a gemmological report st

Estimate £40,000 - £60,000

A DIAMOND DRESS RING in 18ct yellow gold and steel, the coiled snake-like body formed of articulated chevron links, accented by round brilliant cut diamonds, stamped 750, size adjustable up to P / 7.5, 25.7g. 

Estimate £2,000 - £3,000

A FANCY YELLOW AND WHITE DIAMOND RING set with a fancy yellow pear cut diamond of 2.15 carats between two pear cut white diamonds both totalling 0.70 carats, no assay marks, size M1/2 / 6.5, 4.9g. Accompanied by a gemmological report stating the cent

Estimate £6,000 - £8,000

BOUCHERON, A RETRO EMERALD AND DIAMOND BOMBE RING in 18ct rose gold and platinum, the domed face set with three octagonal step cut emeralds totalling 1.2-1.4 carats, with stylised edges set with old cut diamonds, signed Boucheron Paris, French assay

Estimate £2,500 - £3,500

VAN CLEEF & ARPELS, A DIAMOND DRESS RING in 18ct yellow gold, the stylised head with two sections of pave set round brilliant cut diamonds, signed Van Cleef & Arpels and numbered, French maker's mark, French export assay mark, stamped 18KT, size K1/2

Estimate £5,000 - £7,000

CARTIER, A VINTAGE CHRYSOPRASE, ONYX, RUBY AND DIAMOND DRESS RING in 18ct yellow gold, set with a carved chrysoprase accented by polished onyx, step cut rubies and round cut diamonds, signed Cartier and numbered, stamped 750, size H1/2 / 4, 9.3g. 

Estimate £3,000 - £5,000

CARTIER, A SAPPHIRE, RUBY AND DIAMOND CROSSOVER RING, 1994 in 18ct yellow gold, the crossover band set with a cabochon sapphire and a cabochon ruby accented by pave set round brilliant cut diamonds, signed Cartier and numbered, French assay marks, st

Estimate £6,000 - £8,000

AN AQUAMARINE AND DIAMOND RING set with a rectangular step cut aquamarine of 15.34 carats, the stepped shoulders set with round cut diamonds, no assay marks, size N / 6.75, 8.1g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a cushion cut emerald of approximately 1.25 carats in a cluster of round brilliant cut diamonds, the shoulders accented by further round brilliant cut diamonds, stamped 18CT, size N1/2

Estimate £1,500 - £2,500

A BURMA NO HEAT SAPPHIRE RING in 18ct yellow gold, set with an octagonal step cut sapphire of 1.43 carats, stamped 18KT, size M1/2 / 6.5, 4.1g. 

Estimate £3,000 - £5,000

A DIAMOND SNAKE RING in yellow gold, designed as two coiled snakes, the heads set with a row of graduated rose cut diamonds, no assay marks, size P / 7.5, 7.3g. 

Estimate £800 - £1,200

AN ANTIQUE GREEN TOURMALINE AND DIAMOND CLUSTER RING, 19THE CENTURY in yellow gold and silver, set with a round cut green tourmaline of approximately 5.39 carats in a cluster of old cut diamonds, no assay marks, size P1/2 / 8, 4.9g. 

Estimate £2,500 - £3,500

A CEYLON NO HEAT SAPPHIRE, DIAMOND AND EMERALD RING set with an oval cut sapphire of 5.05 carats accented by round brilliant cut diamonds, in a frame of square step cut sapphires and emeralds, further square step cut emeralds accenting the shoulders,

Estimate £10,000 - £15,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 8.23 carats, the shoulders in foliate style set with single cut diamonds, no assay marks, size M / 6.25. 5.8g. Accompanied by a facsimile gemmological report stating the sapp

Estimate £10,000 - £15,000

A 2.15 CARAT SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of 2.15 carats, partial British hallmarks, size K1/2 / 5.5, 4.1g. 

Estimate £5,000 - £7,000

A DIAMOND CLUSTER RING in platinum, set with an old cut diamond of approximately 1.25 carats in a cluster of further old cut diamonds, the diamonds all totalling 2.5-3.0 carats, stamped PLAT, size Q / 8.25, 6.5g. 

Estimate £4,000 - £6,000

AN AQUAMARINE AND DIAMOND RING the octagonal face set with an octagonal step cut aquamarine of 3.27 carats in two concentric borders of old cut diamonds, no assay marks, size S / 9, 5.3g. 

Estimate £1,500 - £2,500

A SOLITAIRE DIAMOND RING in platinum, set with an old European cut diamond of approximately 3.00 carats, the shoulders accented by baguette cut diamonds, stamped PLAT, size M1/2 / 6.5, 4.4g. 

Estimate £20,000 - £30,000

A FRENCH AMETHYST, AQUAMARINE AND PINK TOURMALINE COCKTAIL RING in 18ct yellow gold, set with a central octagonal step cut amethyst, the band set with alternating cabochon aquamarines and pink tourmalines, French assay marks, size K / 5.25, 51.4g.

Estimate £1,800 - £2,200

AN UNHEATED YELLOW SAPPHIRE, AMETHYST AND DIAMOND DRESS RING in 18ct yellow gold, the domed face set with a heart shaped yellow sapphire of approximately 4.70 carats and a heart shaped amethyst, accented by heart, marquise and carre cut diamonds, sta

Estimate £5,000 - £7,000

AN IMPORTANT 4.46 CARAT D COLOUR INTERNALLY FLAWLESS SOLITAIRE DIAMOND RING in platinum, set with an emerald cut diamond of 4.66 carats in a halo of round brilliant cut diamonds, with further diamonds set to the band, full British hallmarks, size L1/

Estimate £140,000 - £180,000

A VINTAGE TURQUOISE DRESS RING in 18ct yellow gold, set with a cabochon turquoise on a ground of twisted wirework, accented by further cabochon turquoise, no assay marks, size H / 3.75, 18.6g. 

Estimate £2,000 - £3,000

A VINTAGE LAPIS LAZULI AND DIAMOND COCKTAIL RING in 18ct yellow gold, set with round brilliant cut diamonds alternating with carved lapis lazuli pieces, the diamonds totalling 1.8-2.0 carats, indistinct maker's mark, French import marks, size M / 6.2

Estimate £1,000 - £1,500

A CEYLON NO HEAT YELLOW SAPPHIRE AND DIAMOND RING in yellow gold set with an octagonal mixed cut yellow sapphire of 15.36 carats accented by rose cut diamonds, no assay marks, size M / 6.25, 8.2g. Accompanied by a gemmological report stating the sapp

Estimate £10,000 - £15,000

A SAPPHIRE AND DIAMOND BOMBE RING in yellow gold, the face set with round cut sapphires and round brilliant cut diamonds, no assay marks, size N / 6.75, 13.9g. 

Estimate £1,500 - £2,500

BOUCHERON, A VINTAGE BURMA NO HEAT RUBY RING in 18ct yellow gold, set with a cabochon ruby of 5.03 carats to a fluted band, signed Boucheron and numbered, French assay marks, stamped OR 750, size J1/2 / 5, 12.1g. Accompanied by a gemmological report

Estimate £25,000 - £35,000

A DIAMOND THREE STONE RING in 18ct rose gold, set with three round brilliant cut diamonds, the principal diamond of 1.50 carats, the diamonds all totalling 3.31 carats, stamped 750, inscribed 1/1.50ct 2/1.81, size O1/2 / 7.5, 6.1g. 

Estimate £5,000 - £7,000

LALAOUNIS, A JADEITE JADE RING in 18ct yellow gold, set with an oval polished jade piece in a textured scrolling border, signed Lalaounis, stamped 750, size I / 4.25, 16.6g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with a cushion cut sapphire of 6.91 carats in a border of round brilliant and baguette cut diamonds, the band accented by further baguette cut diamonds, the diamonds totalling 1.20 carats, sta

Estimate £4,000 - £6,000

A 2.67 CARAT DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 2.67 carats, the trifurcated band accented by further round brilliant cut diamonds, full British hallmarks, size O / 7.25, 12.0g. 

Estimate £10,000 - £15,000

CARTIER, A WHITE CHALCEDONY TANK RING in 18ct white gold, set with a faceted white chalcedony, signed Cartier and numbered, stamped 750, size L / 5.75, 12.7g. 

Estimate £600 - £800

TIFFANY & CO., A SOLITAIRE DIAMOND RING in platinum, set with an emerald cut diamond of 0.91 carats, signed Tiffany & Co., stamped PT950, size J1/2 / 5, 3.4g. 

Estimate £3,000 - £5,000

AN IMPORTANT BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in white gold, set with a cushion cut Burmese ruby of 5.00 carats in a cluster of cushion cut and baguette cut diamonds totalling 2.7-3.0 carats, stamped 18Kt, size L1/2 / 6, 6.8g. Accompanied

Estimate £200,000 - £250,000

AN AQUAMARINE AND DIAMOND RING in platinum, set with an octagonal step cut aquamarine of approximately 6.50 carats, the stepped shoulders set with round brilliant cut diamonds, stamped PLAT, size M1/2 / 6.5, 6.5g. 

Estimate £1,200 - £1,600

VAN CLEEF & APRELS, A MOTHER OF PEARL MARQUETERIE RING in 18ct white gold, the bombe face set with grey and white mother of pearl flowers, signed Van Cleef & Arpels and numbered, French assay marks, stamped 750, size I1/2 / 4.5, 16.0g. 

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of 2.84 carats in a cluster of round brilliant and tapering baguette cut diamonds, the diamonds totalling 1.00 carats, stamped 750, size O / 7.25, 4.1g. 

Estimate £2,000 - £3,000

A TANZANITE, EMERALD AND DIAMOND BOMBE RING in 18ct white gold, set with a cabochon tanzanite of approximately 1.84 carats, accented by round cut emeralds and round brilliant cut diamonds, stamped K18, size O / 7.25, 8.9g. 

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND DRESS RING in platinum, set with an octagonal step cut emerald of 14.70 carats in a cluster of oval cut diamonds, the band accented by baguette cut diamonds, the diamonds all totalling 2.16 carats, stamped Pt950, inscribed D1.5

Estimate £6,000 - £8,000

A 3.02 CARAT G COLOUR, VVS2 SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of 3.02 carats, stamped PLATINUM, size O / 7.25, 4.6g. Accompanied by a gemmological report from the GIA stating the diamond is of G colour and VVS

Estimate £40,000 - £60,000

VAN CLEEF AND ARPELS, A DIAMOND WAVE BAND RING in 18ct white gold, designed as a wave motif accented by round brilliant cut diamonds, signed VCA and numbered, stamped 750, French assay marks, size J / 4.75, 15.0g. 

Estimate £4,000 - £6,000

TIFFANY & CO, A SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 2.04 carats, signed Tiffany & Co, stamped Pt950, size N / 6.5, 4.9g. Accompanied by a gemmological report stating that the diamond is of H colour

Estimate £15,000 - £20,000

AN IMPORTANT 5.35 CARAT SOLITAIRE DIAMOND RING in platinum, set with a marquise cut diamond of 5.35 carats, accented by round cut diamonds in the shoulders, full British hallmarks, size L / 5.75, 5.9g. Accompanied by a facsimile copy of a gemmologica

Estimate £180,000 - £240,000

A RUBY AND DIAMOND THREE STONE RING in platinum and 18ct white gold, set with a round cut ruby of approximately 1.50 carats between two old cut diamonds both totalling 1.2-1.3 carats, the scrolling band set with rose cut diamonds, A. H & S maker's ma

Estimate £2,000 - £3,000

A 2.66 CARAT SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of 2.66 carats between two baguette cut diamonds, no assay marks, size K / 5.25, 4.8g. 

Estimate £8,000 - £12,000

CHAUMET, A RUBY AND DIAMOND RING in 18ct yellow gold, set with an oval cut ruby of approximately 2.01 carats accented by princess cut diamonds, signed Chaumet and numbered, French assay marks, size L1/2 / 6, 14.6g. 

Estimate £5,000 - £7,000

AN EMERALD AND DIAMOND RING in 18ct white gold, set with an octagonal step cut emerald of 5.71 carats in a border of round brilliant cut diamonds, the band set with a row of baguette cut diamonds accented by round brilliant cut diamonds, the diamonds

Estimate £4,000 - £6,000

A BROWN AND WHITE DIAMOND RING set with an oval cut diamond of 1.70 carats and an oval cut natural fancy yellowish brown diamond of 2.02 carats, accented by two tapering baguette cut diamonds, no assay marks, size L1/2 / 6, 6.0g. Accompanied by a gem

Estimate £8,000 - £12,000

A 4.01 CARAT SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a round brilliant cut diamond of 4.01 carats, the band accented by further round brilliant cut diamonds, partial British hallmarks, size M / 6.25, 7.1g. 

Estimate £25,000 - £35,000

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of approximately 7.05 carats in a cluster of old cut diamonds, the diamonds totalling 1.0-1.5 carats, stamped 18ct, size N / 6.75, 8.4g. 

Estimate £5,000 - £7,000

A CABOCHON STAR SAPPHIRE RING in platinum, set with an oval cabochon star sapphire of 40.83 carats, stamped Pt, size M1/2 / 6.5, 18.7g. 

Estimate £15,000 - £25,000

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 £2,000 - £3,000

A 5.28 CARAT SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 5.28 carats, stamped PLAT, size P / 7.5, 6.0g.

Estimate £30,000 - £50,000

AN EMERALD AND DIAMOND DRESS RING in 18ct white gold, set with an oval cut emerald of 1.38 carats in a border of round brilliant and baguette cut diamonds, the diamonds totalling 1.38 carats, stamped 750, size N1/2 / 7, 6.8g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut ruby of 2.49 carats in a border of round brilliant and baguette cut diamonds, further round brilliant cut diamonds accenting the band, the diamonds totalling 0.96 carats, stampe

Estimate £2,000 - £3,000

A FANCY GREENISH YELLOW DIAMOND RING in platinum, set with a cushion cut fancy greenish yellow diamond of 2.41 carats, the stylised shoulders set with round brilliant cut diamonds, stamped PLAT, size M / 6.25, 5.1g. Accompanied by a facsimile report

Estimate £8,000 - £12,000

A CEYLON NO HEAT PINK SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut pink sapphire of 5.62 carats in a cluster of old cut diamonds all totalling 1.1-1.3 carats, no assay marks, size Q1/2 / 8.5, 4.9g. Accompanied by a gemmological report stati

Estimate £8,000 - £12,000

A TANZANITE AND DIAMOND RING in 18ct white gold, set with an oval cut tanzanite of 1.43 carats in a border of round brilliant and baguette cut diamonds, the band accented by further baguette cut diamonds, stamped 750, size K1/2 / 5.5, 3.6g. 

Estimate £800 - £1,200

A DIAMOND RING in 18ct yellow and white gold, the square face set with round brilliant cut diamonds totalling 1.90 carats, the band designed as a watch strap, stamped 750, inscribed 9/1.90ct, size R1/2 9, 15.1g. 

Estimate £1,500 - £2,500

A YELLOW AND WHITE DIAMOND CROSSOVER RING set with a yellow trillion cut diamond of approximately 1.45 carats and a white trillion cut diamond of approximately 1.45 carats, the band accented by round brilliant cut diamonds, no assay marks, size M / 6

Estimate £6,000 - £8,000

A YELLOW AND WHITE DIAMOND DRESS RING in 18ct white gold, set with an oval cut yellow diamond of 0.92 carats in an openwork border set with round brilliant cut diamonds, the bifurcated band set with further round brilliant cut diamonds, stamped Au750

Estimate £1,500 - £2,500

A 2.04 CARAT SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of 2.04 carats, no assay marks, size M / 6.25, 2.6g. 

Estimate £6,000 - £8,000

A DIAMOND CLUSTER RING in 18ct white gold, set with a cluster of round brilliant cut diamonds, the diamonds totalling 2.27 carats, stamped 750, inscribed 7/2.27, size N1/2 / 7, 6.2g. 

Estimate £1,500 - £2,500

A COLOMBIAN EMERALD AND DIAMOND THREE STONE RING in yellow gold, set with an octagonal step cut emerald of approximately 1.41 carats, accented by two round brilliant cut diamonds, the diamonds both totalling 0.9-1.0 carat, no assay marks, size M1/2 /

Estimate £4,000 - £6,000

AN UNHEATED RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a round cut ruby of 1.14 carats in a cluster of old cut diamonds, stamped 18CT PLAT, size O1/2 / 7.5, 4.1g. Accompanied by a gemmological report stating that the rub

Estimate £1,000 - £1,500

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, the principal stones of 1.06, 0.80, 0.70. 0.67 and 0.65 carats, the diamonds all tota

Estimate £15,000 - £25,000

A COLOMBIAN EMERALD AND DIAMOND RING in yellow and white gold, set with an octagonal step cut emerald of 1.65 carats in a border of round brilliant cut diamonds, no assay marks, size L1/2 / 6, 4.0g. Accompanied by a gemmological report stating that t

Estimate £3,000 - £5,000

A 5.80 CARAT SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 5.80 carats, partial British hallmarks, size L1/2 / 6, 11.3g. 

Estimate £30,000 - £40,000

A DIAMOND HALF ETERNITY RING in 18ct rose gold, set with five round brilliant cut diamonds totalling 2.15 carats, stamped 750, inscribed 5/2.15, size M / 6.25, 4.5g. 

Estimate £1,200 - £1,600

A FANCY COLOURED DIAMOND DIAMOND HALO RING in platinum, set to the centre with a round brilliant cut diamond of 2.33 carats, to a border of round brilliant cut diamonds, to round brilliant cut diamond set shoulders, full British hallmarks, size L / 5

Estimate £6,000 - £8,000

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an emerald cut diamond of approximately 4.00 carats in a border of round brilliant cut diamonds, the band set with further diamonds, full British hallmarks, size M / 6, 4.3g. 

Estimate £10,000 - £15,000

A DIAMOND HALF ETERNITY RING in 18ct white gold, set with seven round brilliant cut diamonds totalling 2.16 carats, stamped 750, size N1/2 / 7, 3.1g. 

Estimate £1,500 - £2,000

A FANCY INTENSE GREEN-YELLOW DIAMOND DRESS RING set with an old cut fancy intense green-yellow diamond of 1.65 carats, the stepped shoulders set with baguette and square step cut diamonds, no assay marks, size M1/2 / 6.5, 4.5g. Accompanied by a gemmo

Estimate £10,000 - £15,000

A 1.01 CARAT SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of 1.01 carats in a border of round brilliant cut diamonds, the band set with further round brilliant cut diamonds, no assay marks, inscribed 1.01, size M1/2 / 6.5, 3.1g. 

Estimate £2,000 - £3,000

A NATURAL FANCY YELLOW DIAMOND DRESS RING in 18ct white gold, set with a cushion cut yellow diamond of 0.69 carats, the openwork foliate style band set with round brilliant cut diamonds, stamped Au750, inscribed D0.69CT D0.389CT, size L1/2 / 6, 6.4g.

Estimate £1,500 - £2,000

A 5.15 CARAT H COLOUR, VVS2 DIAMOND ENGAGEMENT RING in 18ct white gold, set with an emerald cut diamond of 5.15 carats, accented by trios of round brilliant and tapering baguette cut diamonds, full British hallmarks, size O / 7, 5.9g. Accompanied by

Estimate £80,000 - £120,000

A RUBY AND DIAMOND RING in platinum and 18ct yellow gold, set with old cut diamonds and square step cut rubies, stamped 18CT PLAT, size P1/2 / 8, 2.5g. 

Estimate £800 - £1,200