BUCCELLATI, A BURMESE RUBY AND DIAMOND RING the wide band set with an oval cut ruby of 1.05 carats, accented by round brilliant cut diamonds, stamped 750, Italian assay marks, size L / 5.75, 11.8g. Accompanied by a gemmological report stating that th

Estimate £7,000 - £9,000

VAN CLEEF & ARPELS, A MALACHITE AND DIAMOND RING set with segments of polished malachite, accented by segments of round brilliant cut diamonds, signed VCA and numbered, stamped 750, size J / 4.75, 6.7g.

Estimate £4,500 - £5,500

A DIAMOND AND SAPPHIRE RING set with a round brilliant cut diamond of 2.18 carats in a border of round brilliant and marquise cut sapphires, inscribed 2.18ct S0.80 D0.44, stamped 900, size L1/2 / 6, 8.0g. 

Estimate £6,000 - £8,000

A BURMA NO HEAT SPINEL AND DIAMOND RING set with a cushion cut spinel of 3.29 carats in a border of round brilliant cut diamonds, stamped 18K, size M / 6.25, 3.8g. Accompanied by a gemmological report stating that the spinel is of Burmese (Myanmar) o

Estimate £4,500 - £5,500

AN ANTIQUE MICROMOSAIC RING in high carat yellow gold, the oval face inlaid with pieces of coloured glass to depict The Temple of Vesta, no assay marks, size K / 5.25, 12.7g. 

Estimate £1,500 - £2,500

CARTIER, A RUBY AND DIAMOND DRESS RING in scrolling design, set with round brilliant cut diamonds and accented by round cut rubies, signed Cartier, stamped 18K, size O1/2 / 7.5, 12.7g. 

Estimate £3,500 - £4,500

A RUBELLITE TOURMALINE RING set with a cushion cut rubellite tourmaline of approximately 5.84 carats, stamped 18K, size M1/2 / 6.5, 11.8g. 

Estimate £2,500 - £3,500

AN ANTIQUE TURQUOISE AND DIAMOND CROWN RING in yellow gold, designed as a crown set with oval cabochon turquoise and old cut diamonds, no assay marks, size J1/2 / 5, 3.5g. 

Estimate £1,500 - £2,500

A FINE BURMA NO HEAT RUBY AND DIAMOND RING, 1950S in platinum, set with an oval cabochon ruby of approximately 3.37 carats, the pierced tapering mount accented by single cut diamonds, French import mark, size L / 5.75, 5.4g. With a gemmological verba

Estimate £3,000 - £5,000

CARTIER, A LOVE RING in 18ct yellow gold, punctuated by screw motifs, signed Cartier and numbered, stamped Au750, Swiss assay marks, Cartier size 52, size L1/2 / 6, 5.8g. Accompanied by a Cartier certificate of authenticity. Current retail price: £1,

Estimate £600 - £800

VAN CLEEF & ARPELS, A RED CORAL AND DIAMOND PHILIPPINES RING in 18ct yellow gold, the shoulders set with polished red coral, accented by single cut diamonds, signed VCA and numbered, French assay marks, size I / 4.25, 7.3g. 

Estimate £3,500 - £4,500

AN AQUAMARINE AND DIAMOND DRESS RING set with a pear cut aquamarine of approximately 45.00 carats accented by round brilliant cut diamonds, the shoulders set with further round brilliant cut diamonds, the diamonds all totalling 4.5-5.0 carats, no ass

Estimate £15,000 - £20,000

A DIAMOND FULL ETERNITY RING the square ring set all around with a row of baguette cut diamonds, stamped 750, size H / 3.75, 4.0g. 

Estimate £800 - £1,200

CHRISTIAN DIOR, A VINTAGE DIAMOND AND ENAMEL SNAKE RING in 18ct yellow gold, designed as a coiled double headed snake, the heads set with single cut diamonds, the body decorated with blue enamel, signed Ch DIOR, stamped 18K, size L / 5.75, 25.3g. 

Estimate £4,000 - £6,000

CARTIER, A VINTAGE DIAMOND DRESS RING the bombe face set with undulating rows of round brilliant cut diamonds, the diamonds all totalling 6.5-7.0 carats, signed Cartier London, no assay marks, size M1/2 / 6.5, 7.5g. 

Estimate £8,000 - £12,000

A RUBELLITE TOURMALINE RING set with an oval cut rubellite tourmaline of approximately 17.64 carats, stamped 18K, size R1/2 / 9, 15.1g. 

Estimate £6,000 - £8,000

A VINTAGE RUBY AND ENAMEL FROG RING in yellow gold, the frog relieved in green enamel and accented by stylised gold beads, the eyes set with cabochon rubies, no assay marks, size N / 6.75, 18.8g. 

Estimate £1,500 - £2,500

DAVID WEBB, A VINTAGE DIAMOND, SAPPHIRE AND ENAMEL PANDA RING designed as a panda decorated with black and white enamel, the eyes set with round brilliant cut diamonds, topped by a round cabochon sapphire in a border of round brilliant cut diamonds,

Estimate £10,000 - £15,000

GUCCI, A DIAMOND HORSEBIT RING in crossover design, the rings accented by round brilliant cut diamonds, signed Gucci, Italian assay marks, stamped Au750, size M / 6.25, 10.8g. 

Estimate £2,000 - £3,000

AN EMERALD RING set with a cushion cut emerald of approximately 3.05 carats, signed Bulgari, no assay marks, size M1/2 / 6.5, 10.

Estimate £6,000 - £8,000

A STAR SAPPHIRE AND DIAMOND RING set with a cabochon star sapphire of approximately 34.00 carats, the shoulders accented by single cut diamonds, no assay marks, size M1/2 / 6.5, 13.8g. 

Estimate £5,000 - £7,000

A TURQUOISE, CORAL AND DIAMOND RING set with a carved cabochon turquoise between two carved cabochon corals, accented by round brilliant cut diamonds, stamped K18, size M1/2 / 6.5, 15.4g. 

Estimate £800 - £1,200

A COLOMBIAN MINOR EMERALD AND DIAMOND CLUSTER RING set with an octagonal step cut emerald of approximately 21.00 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.7-2.0 carats, SR maker's mark, no assay marks, size M /

Estimate £40,000 - £60,000

VAN CLEEF & ARPELS, AN ONYX, EMERALD AND DIAMOND SWAN RING in 18ct yellow gold, in crossover design, designed as two swan heads set with fluted onyx, accented by round cut emeralds and round brilliant cut diamonds, inscribed X14 0.83CT, signed VCA an

Estimate £7,000 - £9,000

BULGARI, A SAPPHIRE RING set with an oval cabochon sapphire, signed Bulgari and numbered, Italian assay marks, size M1/2 / 6.5, 11.3g. 

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND RING set with a cushion cut sapphire of 8.17 carats in a stylised cluster of round brilliant, tapered baguette and marquise cut diamonds, inscribed 8.17ct D2.83, stamped PT900, size L1/2 / 6, 26.4g. 

Estimate £8,000 - £12,000

AN EMERALD AND DIAMOND RING set with an oval cabochon emerald of approximately 18.65 carats accented by round brilliant cut diamonds, on a bifurcated band, no assay marks, size M / 6.25, 15.7g. 

Estimate £2,000 - £3,000

CARTIER, A DIAMOND AND CERAMIC LOVE RING the band pave set throughout with round brilliant cut diamonds, punctuated by six screw motifs set with ceramic, signed Cartier and numbered, Swiss assay marks, stamped 750, size J / 4.75, 9.4g. 

Estimate £3,500 - £4,500

A 3.98 CARAT CEYLON NO HEAT PADPARADSCHA SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire of 3.98 carats, in a cluster of round brilliant cut diamonds, no assay marks, size I / 4.25, 5.2g. Accompanied by a facsimile gemmological repo

Estimate £8,000 - £12,000

A GREEN GLASS INTAGLIO AND DIAMOND RING set with a green glass intaglio moulded to depict a family crest, in a border of single cut diamonds, no assay marks, size O1/2 / 7.5, 28.1g. 

Estimate £2,000 - £3,000

A DIAMOND DRESS RING set with two old European cut diamonds weighing approximately 1.00 carat each, accented by trillion and round brilliant cut diamonds, no assay marks, size R1/2 / 9, 7.8g. 

Estimate £5,000 - £7,000

BULGARI, A FINE SAPPHIRE AND DIAMOND TROMBINO RING in 18ct white gold, set with a cushion cut sapphire of 2.79 carats, between rows of baguette cut diamonds, accented by pave set round brilliant cut diamonds, inscribed 2.79, signed Bvlgari, stamped

Estimate £15,000 - £20,000

VAN CLEEF & ARPELS, A CORAL HEART RING in 18ct yellow gold, set with a heart shaped cabochon coral, signed VCA and numbered, French assay marks, stamped OR 750, size M / 6.25, 6.2g.

Estimate £600 - £800

A MODERNIST LAPIS LAZULI AND DIAMOND DRESS RING in yellow gold, set with a cuboid of lapis lazuli accented by round brilliant cut diamonds, no assay marks, size V / 10.5, 20.1g. 

Estimate £2,000 - £3,000

A RUBY AND DIAMOND RING set with a marquise cut ruby of approximately 2.15 carats in a cluster of marquise and pear cut diamonds, the diamonds all totalling 1.6-1.8 carats, stamped 18K, size L1/2 / 6, 8.5g. 

Estimate £5,000 - £7,000

A SAPPHIRE AND DIAMOND GYPSY RING set with a round cut sapphire between two round brilliant cut diamonds, the band with a satin finish, stamped 18K, size L / 5.75, 8.2g. 

Estimate £1,500 - £2,500

VAN CLEEF & ARPELS, A DIAMOND PERLEE CLOVER RING the wide band ring with six clover motifs set with round brilliant cut diamonds, accented by a beaded border, singed VCA and numbered, stamped Au750, size I1/2 / 4.5, 11.7g. 

Estimate £8,000 - £12,000

CARTIER, A TURQUOISE AND DIAMOND DRESS RING in 18ct yellow gold and platinum, set with a sugarloaf cabochon turquoise on a stylised foliate mount set with round brilliant cut diamonds, signed Cartier Paris, French assay marks, size K / 5.25, 16.3g. 

Estimate £12,000 - £18,000

A RUBY AND DIAMOND RING set with a cushion cut ruby and a row of calibre cut rubies, accented by rows of round brilliant cut diamonds, stamped PLAT, size M1/2 / 6.5, 6.1g.  

Estimate £2,000 - £3,000

BULGARI, A B ZERO 1 RING with engraved lettering 'BVLGARI' to the sides, signed Bvlgari, stamped Au 750, size M1/2 / 6.5, 8.5g. 

Estimate £400 - £600

BUCCELLATI, AN AMETHYST AND DIAMOND RING set with an oval cabochon amethyst in a border of single cut diamonds, signed M. Buccellati, stamped 18K, size K1/2 / 5.5, 8.8g. 

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of approximately 2.88 carats in a cluster of round brilliant and baguette cut diamonds, on a trifurcated band, stamped PT950, size I1/2 / 4.5, 8.9g. 

Estimate £10,000 - £15,000

CARTIER, A RUBELLITE TOURMALINE RING set with an oval cut rubellite tourmaline of approximately 3.05 carats, signed Cartier 1997 and numbered, stamped 750, size I1/2 / 4.5, 14.3g. 

Estimate £3,000 - £5,000

A YELLOW SAPPHIRE AND DIAMOND RING set with an oval cut 6.19 carats, the openwork tapering set with round brilliant cut diamonds, engraved 6.19 0.29, stamped K18, size Q1/2 / 8.25, 9.6g. 

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND THREE STONE RING in 18ct yellow and white gold, set with a cushion cut sapphire of approximately 1.20 carats, accented on each side by a pear cut diamond, full British hallmarks for London 2000, size N / 6.75, 3.8g. 

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND RING set with an octagonal step cut sapphire of approximately 2.72 carats, the shoulders set with round brilliant and baguette cut diamonds, stamped 14K, size N / 6.75, 3.7g. 

Estimate £600 - £800

A WIDE GOLD BAND RING in 18ct yellow and white gold, the band ring with bicolour accents, full British hallmarks for London 1993, size S / 9.25, 9.6g. 

Estimate £600 - £800

CARTIER, AN AMETHYST AND CITRINE PASHA RING the circular face set with cushion and fancy cut amethysts and cushion cut citrines, signed Cartier and numbered, stamped 750, size J / 4.75, 15.9g. 

Estimate £2,000 - £3,000

LALAOUNIS, A GOLD DRESS RING designed as a cluster of meander motifs and spirals, signed Lalaounis, stamped 750, size O / 7.25, 13.8g. 

Estimate £500 - £700

AN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of approximately 5.96 carats in a border of old cut diamonds, no assay marks, size Q / 8.25, 5.9g. 

Estimate £2,000 - £3,000

AN ANTIQUE DIAMOND NAVETTE RING in yellow gold, the navette face set with old cut diamonds, the diamond all totalling 2.4-2.6 carats, the ornate engraved shoulders accented by a row of black enamel, no assay marks, size N1/2 / 7, 6.3g. 

Estimate £3,000 - £5,000

AN ANTIQUE RENAISSANCE REVIVAL ROCK CRYSTAL AND ENAMEL RING, 19TH CENTURY in yellow gold, set with a square step cut rock crystal accented by black enamel, no assay marks, size M1/2 / 6.5, 3.6g. 

Estimate £2,000 - £3,000

AN AQUAMARINE AND DIAMOND RING set with aIAMOND RING set with an octagonal step cut aquamarine of 42.59 carats, the openwork mount in foliate design, accented by round brilliant cut diamonds, signed Sophia D., stamped 750 PLAT, size M / 6.25, 21.9g. 

Estimate £6,000 - £8,000

A RUBY AND DIAMOND THREE STONE RING set with a cabochon ruby between two round brilliant cut diamonds, stamped 18K, size M / 6.25, 6.4g. 

Estimate £1,500 - £2,500

H STERN, A ROCK CRYSTAL COCKTAIL RING set with a facetted rock crystal dome, HS maker's mark, stamped 750, size O1/2 / 7.5, 26.9g. 

Estimate £1,200 - £1,600

AN AQUAMARINE AND DIAMOND DRESS RING set with an octagonal step cut aquamarine of approximately 18.81 carats in a border of round brilliant cut diamonds, accented by a rope work border set with marquise cut diamonds, no assay marks, size L1/2 / 6, 21

Estimate £6,000 - £8,000

BULGARI, A DIAMOND BAND RING set with two rows of round brilliant and marquise cut diamonds, the diamonds all totalling 8.5-9.0 carats, signed Bulgari, stamped 950, size R1/2 / 9, 10.0g. 

Estimate £12,000 - £16,000

A SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of approximately 6.70 carats in a double cluster of round brilliant and single cut diamonds, stamped 18CT, size M / 6.25, 9.5g. 

Estimate £4,000 - £6,000

A 29.80 CARAT SAPPHIRE AND DIAMOND RING set with a sugarloaf cabochon sapphire of approximately 29.80 carats, the shoulders set with French cut diamonds, engraved with an inventory number, no assay marks, size K1/2 / 5.5, 12.0g. 

Estimate £15,000 - £20,000

A 10.27 CARAT ZAMBIAN MINOR EMERALD AND DIAMOND RING set with a cushion cut emerald of 10.27 carats in a cluster of pear, marquise and round brilliant cut diamonds, the shoulders pave set with further round brilliant cut diamonds, the diamonds all to

Estimate £20,000 - £30,000

A FRENCH PERIDOT RING in 18ct yellow gold, set with a cushion cut peridot, French assay marks, size M / 6.25, 8.8g. 

Estimate £1,000 - £1,500

A BURMESE RUBY AND DIAMOND THREE STONE RING set with a cushion cut ruby of approximately 1.51 carats, accented on each side by a round brilliant cut diamond, the diamonds both totalling approximately 1.00 carat, no assay marks, size M / 6.25, 4.3g. W

Estimate £5,000 - £7,000

VAN CLEEF & ARPELS, A RUBY AND DIAMOND FLEURETTE RING in 18ct yellow gold, designed as a flower set with a round brilliant cut diamond in a cluster of round cut rubies, accented on each side by rows of further round brilliant cut diamonds, signed Van

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of approximately 2.50 carats, the stepped shoulders set with baguette cut diamonds, stamped 375, size M / 6.25, 5.1g. 

Estimate £5,000 - £7,000

A CEYLON SAPPHIRE, RUBY AND DIAMOND FLOWER RING set with a cushion cut ruby of approximately 2.13 carats in a cluster of cushion cut sapphires, the sapphires all totalling 11.0-12.0 carats, accented by round brilliant cut diamonds, no assay marks, si

Estimate £12,000 - £16,000

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

AN ART NOUVEAU DIAMOND AND ENAMEL RING designed as a cherub among foliage, set with round cut diamonds, accented by blue enamel, no assay marks, size O1/2 / 7.5, 13.9g. 

Estimate £1,500 - £2,500

A MULTIGEM RING set with a round cabochon opal in a border of a calibre cut diamond, emeralds, amethyst, ruby, sapphire and peridot, no assay marks, size J / 4.74, 5.7g. 

Estimate £1,000 - £1,500

A SET OF THREE DIAMOND STACKING RINGS comprising three undulating tricolour rings accented by round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 14.9g. 

Estimate £1,000 - £1,500

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

A BLOODSTONE INTAGLIO SIGNET RING set with a bloodstone intaglio carved to depict a coat of arms, stamped 18K, size R1/2 / 9, 26.1g. 

Estimate £1,000 - £1,500

A BURMA NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire of approximately 4.34 carats in a cluster of old cut diamonds, the diamonds all totalling 1.2-1.5 carats, no assay marks, size L1/2 / 6, 3.5g. 

Estimate £20,000 - £25,000

A DIAMOND RING in 18ct white gold, set with an oval rose cut diamond of 12.2mm in a closed back setting, accented by single cut diamonds, French import marks, size N / 6.75, 8.4g. 

Estimate £4,000 - £6,000

A COLOMBIAN EMERALD AND DIAMOND THREE STONE RING set with a cushion cut emerald of approximately 5.27 carats accented on each side by a half moon cut diamond, the band set with round brilliant cut diamonds, the diamonds all totalling 1.5-1.7 carats,

Estimate £40,000 - £60,000

A RUBY, SAPPHIRE AND DIAMOND COCKTAIL RING set with an oval cabochon ruby of approximately 14.83 carats, accented by round brilliant cut diamonds and round cut sapphires, stamped 18K, size L1/2 / 6, 28.3g. 

Estimate £3,000 - £5,000

A DIAMOND RING set with an elongated oval cut diamond of approximately 1.05 carats, accented on each side by a fancy cut diamond, no assay marks, size L1/2 / 6, 4.1g. 

Estimate £3,000 - £5,000

AN EMERALD RING set with an octagonal step cut emerald of approximately 6.41 carats, stamped 18CT, size N / 6.75, 4.7g. 

Estimate £3,000 - £5,000

WENDY YUE, A JADEITE JADE, TSAVORITE GARNET AND DIAMOND FLOWER RING in 18ct white gold, set with jadeite jade petals and round cut tsavorite garnets, accented by round brilliant cut diamonds, maker's mark, full British hallmarks, stamped 750, size N1

Estimate £3,500 - £4,500

A FIRE OPAL AND ORANGE SAPPHIRE DRESS RING set with a square step cut fire opal, the mount accented by round cut orange sapphires, stamped 14K, size R1/2 / 8.75, 40.4g. 

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND THREE STONE RING set with a cushion cut sapphire of approximately 1.10 carats between two trillion cut diamonds, stamped 18K, size M / 6.25, 3.4g. 

Estimate £1,500 - £2,500