A SOLITAIRE DIAMOND RING set with an old cut diamond of approximately 2.18 carats, the shoulders set with baguette cut diamonds, no assay marks, size M1/2 / 6.5, 3.3g. 

Estimate £7,000 - £9,000

CARTIER, AN ART DECO RUBY AND DIAMOND TUTTI FRUTTI DRESS RING set all around with a row of mughal rubies carved to depict fruit, accented by round cut diamonds, signed Cartier Paris, indistinct assay marks, size K1/2 / 5.5, 8.7g. Accompanied by a Car

Estimate £10,000 - £15,000

A SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a marquise cut diamond of approximately 2.00 carats, the shoulders set with tapered baguette cut diamonds, partial British hallmarks, sizing beads, size J / 4.75, 5.7g. 

Estimate £5,000 - £7,000

A YELLOW SAPPHIRE AND DIAMOND RING set with a cushion cut yellow sapphire of approximately 13.20 carats, the pierced mount accented by old cut diamonds, no assay marks, size M1/2 / 6.5, 11.5g. 

Estimate £1,500 - £2,500

LALAOUNIS, A GOLD INTAGLIO RING carved to depict Minoan women worshiping a goddess in a field of flowers, after an ancient ring 1500-1450 BC in the Archaeological Museum of Heraklion, Lalaounis maker's mark, stamped 750, size J1/2 / 5, 6.0g. 

Estimate £800 - £1,200

DAVID WEBB, A DIAMOND RING the band ring accented by geometric segments set with round brilliant cut diamonds, signed Webb, stamped PLAT 18K, size I1/2 / 4.5, 13.0g. 

Estimate £5,000 - £7,000

MAUBOUSSIN, A DIAMOND CLUSTER RING in platinum, set with a round brilliant cut diamond of approximately 2.91 carats, in a cluster of further round brilliant and baguette cut diamonds, the diamonds all totalling 6.5-7.0 carats, signed Mauboussin and n

Estimate £25,000 - £30,000

STEPHEN WEBSTER, A ROCK CRYSTAL, DIAMOND AND PINK HARDSTONE CRYSTAL HAZE RING in 18ct white gold, set with a faceted rock crystal over a pink hardstone, in a border of round brilliant cut diamonds, Stephen Webster maker's mark, full British hallmarks

Estimate £1,200 - £1,600

A DIAMOND THREE STONE RING set with three round brilliant cut diamonds, the diamonds all totalling 2.0-2.3 carats, no assay marks, size N / 6.75, 3.5g.

Estimate £4,000 - £6,000

THEO FENNELL, A PARAIBA TOURMALINE AND DIAMOND RING in 18ct white gold, set with a fancy cut Paraiba tourmaline of 6.64 carats in a border of round brilliant cut diamonds, the shoulders decorated with a dragon motif, signed Fennell, full British hall

Estimate £15,000 - £20,000

CARTIER, A DIAMOND PILLAR RING in 18ct yellow gold, the open band designed as a series of pillars set with round brilliant cut diamonds, the diamonds all totalling 3.5-3.8 carats, signed Cartier and numbered, French assay marks, size M / 6.25, 12.1g.

Estimate £6,000 - £8,000

CARTIER, A DIAMOND, TSAVORITE GARNET AND ONYX PANTHERE RING in 18ct white gold, designed as a coiled panther, the head pave set with round brilliant cut diamonds, the eyes set with pear cut tsavorite garnets, the nose set with a polished onyx, signed

Estimate £8,000 - £12,000

AN ART DECO BLACK OPAL AND DIAMOND RING in platinum, set with an oval cabochon black opal, the shoulders set with baguette cut diamonds, stamped PLAT, size L / 5.75, 4.1g. 

Estimate £20,000 - £25,000

A FRENCH DIAMOND ETERNITY RING in 18ct white gold, set all around with a row of round brilliant cut diamonds, French assay marks, size O / 7.25, 1.8g. 

Estimate £800 - £1,200

DURAND & CO., AN ART DECO SAPPHIRE, CHRYSOPRASE AND DIAMOND RING set with an oval cut sapphire between two rectangular step cut chrysoprase, accented by old and single cut diamonds, Durand & Co. maker's mark, stamped 14K, size K / 5.25, 5.3g. 

Estimate £3,000 - £5,000

A VINTAGE ONYX AND DIAMOND RING in 18ct white gold, set with a pyramid-shaped onyx accented by polished onyx and a row of round cut diamonds, stamped 18Kt, size N / 6.75, 15.4g.

Estimate £800 - £1,200

AN ANTIQUE DIAMOND AND ENAMEL RING in yellow gold, the oval face set with an old European cut diamond of approximately 0.92 carats on a blue enamel background, in a border of old cut diamonds, further old cut diamonds set to the shoulders, the diamon

Estimate £3,000 - £5,000

A SAPPHIRE AND DIAMOND BOMBE RING set with a round cut sapphire in a halo of round brilliant cut diamonds and half moon cut sapphires, accented by pave set round brilliant cut diamonds, no assay marks, size J1/2 / 5, 15.3g. 

Estimate £3,000 - £5,000

A BURMA NO HEAT RUBY AND DIAMOND BOMBE RING in yellow gold, the openwork bombe face set with an oval cabochon ruby of approximately 3.41 carats, accented by single cut diamonds, Egyptian assay marks, size I1/2 / 4.5, 7.2g. With a gemmological verbal

Estimate £3,000 - £5,000

A RETRO DIAMOND RING comprising a central section set with baguette and trapezoid cut diamonds, accented by sections of round brilliant cut diamonds, no assay marks, size N1/2 / 7, 18.6g. 

Estimate £5,000 - £7,000

A 1.20 CARAT D COLOUR SOLITAIRE DIAMOND RING in platinum, set east west with an oval brilliant cut diamond of 1.20 carats, partial British hallmarks, size M / 6.25, 5.3g. Accompanied by a GIA report stating that the diamond is D colour and SI1 clarit

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an oval cut sapphire of approximately 3.02 carats, accented on each side by a round brilliant cut diamonds, the diamonds both totalling 0.8-0.9 carats, full British hallmarks, size M / 6.2

Estimate £2,500 - £3,500

VAN CLEEF & ARPELS, A DIAMOND DRESS RING in 18ct yellow gold, set with three clusters of round brilliant cut diamonds, accented by rows of baguette cut diamonds, signed VCA and numbered, French assay marks, size O1/2 / 7.5, 7.9g. 

Estimate £8,000 - £12,000

AN EXCEPTIONAL FIRE OPAL AND DIAMOND CLUSTER RING in platinum, set with an oval cabochon fire opal of approximately 21.10 carats, in a cluster of round brilliant and pear cut diamonds, the diamonds all totalling 2.6-2.8 carats, stamped Pt900, size L1

Estimate £5,000 - £7,000

AN EMERALD AND DIAMOND CLUSTER RING set with an oval cabochon emerald of approximately 4.91 carats in a cluster of round brilliant and baguette cut diamonds, inscribed 0.69 0.66, stamped Pt900, size N / 6.75, 12.0g. 

Estimate £1,500 - £2,500

A VINTAGE CORAL, ONYX AND DIAMOND RING in 14ct yellow gold, set with carved pieces of black onyx and angel skin coral, accented by rows of round cut diamonds, stamped 14K585, size M / 6.5, 20.1g. 

Estimate £1,000 - £1,500

BUCCELLATI, A RUBY AND DIAMOND CLUSTER RING set with a cushion cut ruby of approximately 3.11 carats, in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.6-1.9 carats, signed M. Buccellati, stamped 750, size R1/2 / 9, 6.8g. 

Estimate £10,000 - £15,000

AN EMERALD INTAGLIO AND DIAMOND RING set with an oval cabochon emerald intaglio carved to depict a classical figure, accented by rose cut diamonds, no assay marks, size I1/2 / 4.5, 8.0g. 

Estimate £2,000 - £3,000

A 21.20 CARAT BURMA NO HEAT SAPPHIRE AND DIAMOND RING set with an octagonal step cut sapphire of 21.20 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 2.4-2.6 carats, marked indistinctly, size K / 5.25, 11.6g. Accompan

Estimate £20,000 - £30,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire of 3.34 carats in a cluster of old cut diamond, the diamonds all totalling 0.8-1.0 carats, no assay marks, size Q / 8.25, 5.1g. Accompanied by a gemmological report st

Estimate £4,000 - £6,000

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

AN ANTIQUE DIAMOND CLUSTER RING in yellow gold and silver, set with a cluster of old cut diamonds, no assay marks, size R / 8.75, 4.4g. 

Estimate £3,000 - £5,000

A DIAMOND THREE STONE RING in yellow gold and silver, set with three rose cut diamonds, no assay marks, size P / 7.75, 5.1g. 

Estimate £6,000 - £8,000

A SAPPHIRE AND DIAMOND THREE STONE RING set with a cushion cut sapphire of approximately 2.36 carats, accented on each side by an old cut diamond, the diamonds both totalling 1.3-1.5 carats, no assay marks, size N1/2 / 7, 5.1g. 

Estimate £3,000 - £5,000

VAN CLEEF & ARPELS, A NATURAL SALTWATER PEARL AND DIAMOND RING set with a pearl of 8.0mm, the shoulders set with single cut diamonds, signed Van Cleef & Arpels, no assay marks, size R1/2 / 9, 3.1g. 

Estimate £4,000 - £6,000

A SAPPHIRE INTAGLIO SIGNET RING set with a cushion cut sapphire intaglio carved to depict a family crest, no assay marks, size M1/2 / 6.5, 14.6g. 

Estimate £6,000 - £8,000

AN ART DECO DIAMOND AND EMERALD DRESS RING in platinum, set with an old European cut diamond of approximately 1.53 carats, accented by step cut emeralds and single cut diamonds, French import mark, size J / 4.75, 4.6g. Please note that four of the em

Estimate £6,000 - £8,000

A FINE 7.12 CARAT CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 7.12 carats in a border of round brilliant cut diamonds, the bifurcated shoulders set with round brilliant and baguette cut diamonds, stamped 18CT 750, size M

Estimate £15,000 - £20,000

A DIAMOND DRESS RING set with a hexagonal step cut diamond of approximately 1.75 carats, the shoulders set with baguette cut diamonds, stamped 750 18Kt, size M / 6.25, 5.7g. 

Estimate £3,500 - £4,500

STERLE, A BLACK PEARL AND DIAMOND FLOWER RING designed as a stylised flower set with a black pearl of 8.7mm, accented by round brilliant cut diamonds, on a braided bifurcated band, signed Sterle Paris and numbered, no assay marks, size H1/2 / 4, 8.7g

Estimate £6,000 - £8,000

CARTIER, A MAILLON PANTHERE RING in 18ct white gold, the band comprising maillon links, signed Cartier and numbered, French assay marks, size N / 6.75, 14.4g. Accompanied by a Cartier box and certificate of authenticity. 

Estimate £1,000 - £1,500

A CEYLON NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire of 6.65 carats in a cluster of round brilliant cut diamonds, stamped PLAT, size K / 5.25, 6.0g. AccomA CEYLON NO HEAT SAPPHIRE AND DIAMOND RNG 6.65 carats facs report

Estimate £12,000 - £16,000

A BURMESE RUBY AND DIAMOND BOMBE RING the bombe face set with an oval cut ruby of approximately 1.80 carats accented by round brilliant cut diamonds, no assay marks, sizing band, size J1/2 / 5, 10.6g. 

Estimate £4,500 - £5,500

A FRENCH SAPPHIRE AND DIAMOND RING in 18ct white gold, set with a row of graduated oval cut sapphires, the sapphires all totalling 4.8-5.2 carats, in scalloped edge surround, pave set with round cut diamonds, the diamonds all totalling 2.3-2.5 carats

Estimate £2,000 - £3,000

A DIAMOND FULL ETERNITY RING the band set with five rows of round brilliant cut diamonds, all totalling 5.5-6.0 carats, no assay marks, size L / 5.5, 15.4g.

Estimate £1,000 - £1,500

A NATURAL FANCY INTENSE ORANGE - YELLOW DIAMOND FLOWER RING in 18ct yellow gold, set to the centre with a round brilliant cut diamond in a cluster of pear cut orange yellow diamonds, partial British hallmarks, size N / 6.75, 6.0g.  Accompanied by fi

Estimate £8,000 - £12,000

CARTIER, A DIAMOND RING in 18ct white gold, pave set with rows of round brilliant cut diamonds, signed Cartier and numbered, French assay marks, size L1/2 / 6, 6.2g. 

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND DRESS RING the rectangular face set with an old cut diamond of approximately 0.82 carats in a border of French cut sapphires, accented by further old cut diamonds, stamped PLAT, size N / 6.75, 5.8g. 

Estimate £3,000 - £5,000

A SAPPHIRE AND DIAMOND DRESS RING set with a baguette cut diamond in a border of French cut sapphires and old cut diamonds, further old cut diamonds set to the shoulders, no assay marks, size O1/2 / 7.5, 5.9g. 

Estimate £3,000 - £5,000

AN EMERALD AND DIAMOND THREE STONE RING in platinum, set with an octagonal step cut emerald of 1.01 carats between two old cut diamonds, the diamonds both totalling 0.82 carats, partial British hallmarks, size O1/2 / 7.5, 5.6g. 

Estimate £3,000 - £5,000

AN ANTIQUE SAPPHIRE AND DIAMOND RING set with an oval cut sapphire in a border of old and rose cut diamonds, no assay marks, size M1/2 / 6.5, 2.1g. 

Estimate £2,000 - £3,000

AN ANTIQUE ART NOUVEAU FRENCH CONCH SHELL, DIAMOND AND PEARL RING in 18ct yellow gold, designed as a woman with long flowing hair which forms the band, her face formed of carved shell set with a conch shell hat accented by an old cut diamond, accente

Estimate £8,000 - £12,000

A SAPPHIRE AND DIAMOND RING set with a round cut sapphire in a double border of single cut diamonds, further single cut diamonds set to the shoulders, no assay marks, size N1/2 / 7, 4.2g. 

Estimate £2,000 - £3,000

AN ANTIQUE DIAMOND AND EMERALD RING set with a point cut diamond and oval cabochon emerald, in a border of rose cut diamonds, on a later band, no assay marks, size N / 6.75, 8.8g. 

Estimate £3,000 - £5,000

A VINTAGE RUBY AND DIAMOND RING, 1950S in platinum, of circular bombe design, set with round cut rubies totalling 1.8-2.2 carats and round cut diamonds totalling 1.2-1.5 carats, no assay marks, size L / 5.75, 7.4g.

Estimate £2,000 - £3,000

A FINE COLOMBIAN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of approximately 3.32 carats, accented by pave set round brilliant cut diamonds, the diamonds all totalling 1.6-2.0 carats, stamped 750, size N / 6.75, 11.7g. Accompanie

Estimate £8,000 - £12,000

A CEYLON NO HEAT SAPPHIRE, RUBY AND DIAMOND DRESS RING set with a cushion cut sapphire of approximately 12.04 carats accented by calibre and oval cut rubies, the shoulders set with old and single cut diamonds, the rubies all totalling 2.3-2.5 carats,

Estimate £6,000 - £8,000