A TURQUOISE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a cabochon turquoise in a triple cluster of round brilliant cut diamonds, the diamonds all totalling 1.3-1.5 carats, no assay marks, size J1/2 / 5, 15.3g. 

Estimate £2,000 - £3,000

DAVID WEBB, A VINTAGE ROCK CRYSTAL DRESS RING, CIRCA 1975 in 18ct yellow gold, set with a large rose cut piece rock crystal within a diamond shaped mount, on a tapering band, signed Webb, stamped 18K, sizing band, size K / 5, 21.8g.

Estimate £1,500 - £2,500

A FINE BLACK OPAL AND DIAMOND RING in white gold, set with a cabochon black opal in a border of single cut diamonds, no assay marks, size O / 7.25, 3.6g. 

Estimate £1,000 - £1,500

AN ANTIQUE ART DECO FRENCH CORAL, DIAMOND, AND SAPPHIRE DRESS RING in platinum, set with a sugarloaf cabochon coral in a border of rose cut diamonds and square step cut sapphires, the shoulders set with rose cut diamonds, French assay marks, size L /

Estimate £1,500 - £2,500

KUTCHINSKY, A MODERNIST GOLD BAND RING, 1967 in 18ct yellow gold, the wide band with a hammered design, signed Kutchinsky, full British hallmarks for London 1967, size J1/2 / 5, 16.9g. 

Estimate £800 - £1,200

A FINE COLOMBIAN EMERALD AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an octagonal step cut emerald of approximately 21.00 carats, in a cluster of round brilliant cut diamonds all totalling 2.2-2.5 carats, no assay marks, size L / 5.5, 13.5

Estimate £40,000 - £60,000

A RUBY AND DIAMOND TOI ET MOI RING in platinum, set with a round cut ruby of approximately 0.70 carats and a round brilliant cut diamond of approximately 1.00 carat, accented by baguette and single cut diamonds, stamped 10%IRID PLAT, size M / 6.25, 7

Estimate £4,000 - £6,000

A FINE 10.03 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct white gold set with an emerald cut diamond of 10.03 carats, stamped 18k, size K / 5.25, 6.2g. Accompanied by a gemmological report stating the diamond is of J colour and VVS2 clarity with n

Estimate £100,000 - £150,000

A DIAMOND FULL ETERNITY RING in platinum, set with all around with a row of emerald cut diamonds, the setting accented by round brilliant cut diamonds, the diamonds all totalling 7.5-8.0 carats, no assay marks, size I / 4.25, 6.9g. 

Estimate £8,000 - £12,000

A DIAMOND AND EMERALD DRESS RING in platinum, set with an old cut diamond of approximately 1.35 carats, the stepped shoulders set with square step cut emeralds and single cut diamonds, stamped PLATINUM, size L / 5.75, 5.3g. 

Estimate £4,000 - £6,000

CHARLES DE TEMPLE, A MODERNIST DIAMOND BAND RING, 1967 in 18ct yellow and white gold, the band set with round brilliant cut diamonds, signed C de T, full British hallmarks for London 1967, size L1/2 / 6, 10.3g.

Estimate £1,500 - £2,000

VAN CLEEF & ARPELS, A YELLOW DIAMOND DRESS RING in 18ct yellow gold, set with three baguette cut white diamonds, the band pave set with round brilliant cut yellow diamonds, signed VCA and numbered, French assay marks, size H1/2 / 4, 3.0g. 

Estimate £3,000 - £5,000

A FINE KUNZITE AND DIAMOND DRESS RING in 18ct yellow gold, set with an oval cut kunzite of approximately 71.00 carats, the stylised shoulders set with round brilliant cut diamonds, the diamonds all totalling 3.6-3.8 carats, no assay marks, size K / 5

Estimate £5,000 - £7,000

A VINTAGE INTERCHANGEABLE DIAMOND, LAPIS LAZULI, CORAL, CHRYSOPRASE AND TURQUOISE DRESS RING, 1970S in 18ct yellow gold, the textured openwork bombe ring set to the centre with a cabochon lapis lazuli in a border of round brilliant cut diamonds, the

Estimate £1,500 - £2,500

PIERRE STERLE, A FINE VINTAGE CORAL DRESS RING in 18ct yellow gold, set with polished corals to a stylised square band, signed Sterle Paris, French assay marks, size J1/2 / 5, 17.1g. 

Estimate £5,000 - £7,000

AN ANTIQUE FIVE STONE DIAMOND RING in 18ct yellow gold, set with five old European cut diamonds, accented by rose cut diamonds, the diamonds all totalling 2.2-2.4 carats, stamped 18ct, size M / 6.25, 3.9g. 

Estimate £2,000 - £3,000

AN IMPERIAL TOPAZ AND DIAMOND RING in platinum, set with an octagonal step cut orange topaz of 8.52 carats in a border of single cut diamonds, no assay marks, size J1/2 / 5, 6.0g. 

Estimate £3,000 - £5,000

AN ANTIQUE EMERALD AND DIAMOND CLUSTER RING in yellow gold and silver, set with a cabochon emerald in a cluster of old cut diamonds, the diamonds all totalling 2.5-3.0 carats, no assay marks, size L1/2 / 6, 5.3g. 

Estimate £3,000 - £5,000

A PINK TOPAZ AND DIAMOND CLUSTER RING in yellow gold, set with an oval cut pink topaz of approximately 2.12 carats in a cluster of rose cut diamonds, no assay marks, size N1/2 / 7, 4.5g. 

Estimate £2,000 - £3,000

AN EARLY ANTIQUE DIAMOND RING, 16TH CENTURY OR LATER in yellow gold, set with a point cut diamond, no assay marks, size P / 7.75, 13.0g. 

Estimate £2,500 - £3,500

AN ANTIQUE DIAMOND AND RUBY SNAKE RING in silver and yellow gold, designed as two coiled snakes set with rose cut diamonds and round cut ruby eyes, no assay marks, size M1/2 / 6.5, 4.6g. 

Estimate £1,000 - £1,500

GEORG JENSEN, A VINTAGE LAPIS LAZULI RING in 18ct yellow gold, set with a large cabochon lapis lazuli, design number 1046, post 1945 maker's mark, stamped 18K 750, size K1/2 / 5, 22.6g. 

Estimate £2,000 - £3,000

AN ANTIQUE GEORGIAN STUART CRYSTAL RING, 18TH CENTURY AND LATER in yellow gold, depicting cherubs around a wreath, a heart pierced by arrows, and a fede motif on a blue fabric background, beneath a faceted Stuart crystal, no assay marks, size M1/2 /

Estimate £2,000 - £3,000

A GOLD CAMEO RING in high carat yellow gold, the oval face with the profile of a classical woman in high relief, no assay marks, size J / 4.75, 7.6g. 

Estimate £3,000 - £5,000

A BURMA NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire of 4.96 carats, within a border of round cut diamonds, all totalling 1.4-1.6 carats, no assay marks, size N / 6.75, 4.9g. With a gemmological verbal assessment stating

Estimate £12,000 - £16,000

AN ANTIQUE EMERALD AND DIAMOND GIARDINETTO RING, 18TH CENTURY in yellow gold and silver, set with rose cut diamonds and step cut emeralds in a foliate design, no assay marks, size J / 4.75, 4.4g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an oval cut sapphire of approximately 3.02 carats between two round brilliant cut diamonds, the diamonds both totalling 0.8-0.9 carats, partial British hallmarks, size M1/2 / 6.5, 5.0g. 

Estimate £3,000 - £5,000

TIFFANY & CO., A DIAMOND ETERNITY RING in platinum, set all around with a row of round brilliant cut diamonds, the diamonds all totalling 1.8-2.0 carats, worn signature, stamped platinum, size J1/2 / 5, 3.5g. 

Estimate £2,000 - £3,000

A BURMA NO HEAT RUBY AND DIAMOND RING in 18ct white gold, set with an oval cut ruby of 1.91 carats, accented by rows of baguette cut diamonds, the diamonds all totalling 2.06 carats, inscribed 1.915 2.06, stamped K18WG, size N / 6.75, 5.6g. Accompani

Estimate £4,000 - £6,000

A COLOMBIAN EMERALD AND DIAMOND RING in platinum, set with an octagonal step cut emerald of 6.19 carats in a border of round brilliant cut diamonds, the band set with further diamonds, stamped PLAT950, size O / 7.25, 9.1g. Accompanied by a gemmologic

Estimate £10,000 - £15,000

TIFFANY & CO., A DIAMOND ETERNITY RING in platinum, set all around with a row of radiant cut diamonds, the diamonds all totalling 1.37 carats, signed Tiffany & Co., stamped PT950, size M / 6.25, 4.9g. 

Estimate £600 - £800

A DIAMOND THREE STONE RING in 18ct yellow gold, set with three old cut diamonds all totalling 1.2-1.4 carats, full British hallmarks, size M1/2 / 6.5, 3.3g. 

Estimate £1,000 - £1,500

CARTIER, A 1.51 CARAT SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a round brilliant cut diamond of 1.51 carats, signed Cartier, stamped 18K, size J / 4.75 with sizing beads, 5.4g. 

Estimate £5,000 - £7,000

A DIAMOND DRESS RING in platinum, the open band in geometric design, set with a fancy cut and baguette cut diamond, accented by round brilliant and single cut diamonds, no assay marks, size O1/2 / 7.5, 5.7g. 

Estimate £1,000 - £1,500

A FINE DIAMOND FULL ETERNITY RING in platinum, set all around with a row of emerald cut diamonds all totalling 14.0-15.0 carats, no assay marks, size L / 5.75, 10.1g. 

Estimate £35,000 - £45,000

VAN CLEEF & ARPELS, A NATURAL SALTWATER PEARL AND DIAMOND RING in platinum, set with a pearl of 8.00mm, the shoulders set with trios of single cut diamonds, signed Van Cleef & Arpels, no assay marks, adjusted to size R1/2 / 8.75, 3.2g. With a gemmolo

Estimate £4,000 - £6,000

A COLOMBIAN EMERALD AND DIAMOND RING in white gold, set with an octagonal step cut emerald of 1.36 carats flanked by two trillion cut diamonds, no assay marks, size N / 6.75, 3.5g. Accompanied by a gemmological report stating that the emerald is of C

Estimate £3,000 - £5,000

A DIAMOND NAVETTE RING in 18ct white gold, the pierced navette face set to the centre with an old European cut diamond of approximately 0.70 carats, accented throughout with round brilliant and carre cut diamonds, stamped 18K 750, size J1/2 / 5, 6.2g

Estimate £2,000 - £3,000

A BURMA NO HEAT SAPPHIRE AND DIAMOND RING in platinum, set with a cabochon sapphire of 12.32 carats in a cluster of old cut diamonds, no assay marks, size P1/2 / 8, 7.5g. Accompanied by a gemmological report stating that the sapphire is of Burmese (M

Estimate £40,000 - £60,000

A 1.10 CARAT SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of 1.10 carats, partial British hallmarks, size N1/2 / 7, 3.4g. Accompanied by a gemmological report from GIA stating that the diamond is of J colour and VS1 clar

Estimate £2,000 - £3,000

AN ANTIQUE CEYLON NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING in yellow gold and silver, set with an octagonal step cut sapphire of approximately 3.78 carats, in a cluster of old and rose cut diamonds, no assay marks, size N / 6.75, 5.0g. Accompanied b

Estimate £2,500 - £3,500

A DIAMOND DRESS RING in yellow gold, set with three round brilliant cut diamonds of approximately 0.35, 0.80 and 0.40 carats, accented by further round brilliant cut diamonds, no assay marks, size T / 9.5, 6.9g. 

Estimate £2,500 - £3,500

A DIAMOND DRESS RING in yellow gold, the stylised band set with a pear shaped rose cut diamond of approximately 3.00 carats, no assay marks, size M / 6.25, 8.8g. 

Estimate £12,000 - £16,000

A COLOMBIAN EMERALD AND DIAMOND RING in platinum, set with an octagonal step cut emerald of 3.30 carats between two trillion cut diamonds both totalling 1.18 carats, inscribed 3.30 D1.18, full British hallmarks, size Q / 8, 6.9g. Accompanied by a gem

Estimate £15,000 - £20,000

A BURMESE RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of 10.35 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 2.0-2.5 carats, stamped 18K, size N / 6.75, 9.3g. 

Estimate £15,000 - £20,000

KUTCHINSKY, A MODERNIST AQUAMARINE RING, 1960 in 18ct yellow gold, the wide band with a brick work design, set with a cabochon aquamarine, signed Kutchinsky, full British hallmarks for London 1960, size M1/2 / 6.5, 16.3g. 

Estimate £1,500 - £2,500

BOUCHERON, A LE QUATRE DIAMOND RING in 18ct yellow gold, set with a row of round brilliant cut diamonds, inscribed 'Christian 8th June 2008', signed Boucheron and numbered, stamped OR 750, size K / 5.25, 10.0g. Accompanied by a Boucheron ring box and

Estimate £2,000 - £3,000

A FINE COLOMBIAN EMERALD AND DIAMOND THREE STONE RING in platinum, set with an octagonal step cut emerald of 3.50 carats between two old European cut diamonds, the diamonds both totalling approximately 1.00 carat, partial British hallmarks, size N /

Estimate £10,000 - £15,000

A FULL DIAMOND ETERNITY RING in yellow and white gold, set with three rows of princess cut diamonds, the diamonds all totalling 6.0-7.0 carats, no assay marks, size M / 6.25, 8.8g. 

Estimate £2,500 - £3,500

A RUBY AND DIAMOND TOI ET MOI RING in yellow gold and platinum, set with a cushion cut ruby of approximately 1.00 carat and an old cut diamond of approximately 1.23 carats, accented by round brilliant cut diamonds, no assay marks, size R / 8.5, 8.4g.

Estimate £3,000 - £5,000

ADLER, A 3.00 CARAT DIAMOND HEART RING in 18ct white gold, set with a heart cut diamond of 3.00 carats, the tapering band pave set with round brilliant cut diamonds, signed Adler, stamped 750, size N1/2 / 7, 20.1g. Accompanied by a gemmological repor

Estimate £30,000 - £50,000

CARTIER, AN AMETHYST TANK RING, 1997 in 18ct white gold, set with a square buff top cabochon amethyst, signed Cartier and numbered, French assay mark, size O1/2 / 7.5, 14.3g. 

Estimate £1,500 - £2,500

TIFFANY & CO., A DIAMOND VICTORIA RING in 18ct yellow gold, set with four marquise cut diamonds, the band half set with a row of round brilliant cut diamonds, signed T&CO., stamped Au750, size K / 5.25, 3.0g. Accompanied by a Tiffany & Co. ring box. 

Estimate £2,500 - £3,500

VAN CLEEF & ARPELS, A CORAL AND DIAMOND RING AND A LAPIS LAZULI AND DIAMOND RING in 18ct yellow gold, each comprising a carved coral and lapis lazuli respectively, accented by a round brilliant cut diamond, each signed VCA and numbered, stamped 18K,

Estimate £6,000 - £8,000

CARTIER, A GOLD RING in 18ct yellow and white gold, the tapering band with a central fluted white gold section, signed Cartier and numbered, French assay marks, size N / 6.75, 9.5g. 

Estimate £1,500 - £2,500

A FRENCH CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in platinum, set with a cushion cut sapphire of 5.10 carats in a border of single cut diamonds, the shoulders set with further diamonds, French assay marks, size J / 4.75, 4.6g. Accompanied by a gemmo

Estimate £8,000 - £12,000

A SAPPHIRE, EMERALD, RUBY AND DIAMOND DRESS RING in 18ct white gold, set with an oval cut sapphire of approximately 2.00 carats, an oval cut emerald of approximately 0.70 carats, and an oval cut ruby of 1.20 carats, accented by a scrolling border of

Estimate £1,500 - £2,500

A CHRYSOPRASE AND DIAMOND COCKTAIL RING in 18ct white gold, set with a large cabochon chrysoprase accented by trios of round brilliant cut diamonds, French import mark, size L1/2 / 6, 23.4g.

Estimate £2,000 - £3,000

AN ANTIQUE ART NOUVEAU FRENCH PLIQUE A JOUR ENAMEL AND DIAMOND RING in 18ct yellow gold, designed as a winged woman relieved in blue and pearlescent plique a jour enamel, accented by a rose cut diamond, French maker's mark, French assay mark, size M1

Estimate £5,000 - £7,000

CARTIER, A CHALCEDONY TANK RING, 1998 in 18ct white gold, set with a square buff top cabochon white chalcedony, signed Cartier and numbered, French assay mark, size J1/2 / 5, 12.0g. 

Estimate £1,500 - £2,500

A 5.01 CARAT SOLITAIRE DIAMOND RING in platinum, set with a heart shaped brilliant cut diamond of 5.01 carats, the band set with a row of princess cut diamonds, full British hallmarks, size M / 6.25, 7.4g. With a facsimile gemmological report from GI

Estimate £60,000 - £80,000

LOT WITHDRAWN. 

Estimate £40,000 - £60,000

A SAPPHIRE AND DIAMOND RING in platinum, set with an oval cut sapphire of approximately 2.76 carats flanked by calibre cut sapphires, in a scalloped border of round brilliant cut diamonds, no assay marks, size N / 6.75, 6.3g.

Estimate £3,000 - £5,000

A COLOMBIAN EMERALD AND DIAMOND RING in 18ct white gold, set with a pear cut emerald of 3.68 carats in a border of round brilliant cut diamonds, the band set with further diamonds, stamped 750, size M1/2 / 6.5, 4.3g. 

Estimate £8,000 - £12,000

A DIAMOND DRESS RING in platinum, set with an old cut diamond of approximately 1.10 carats, flanked by baguette and single cut diamonds, stamped PLAT, size O / 7.25, 4.1g.

Estimate £2,000 - £3,000