AN EMERALD AND DIAMOND RING set with an oval cut emerald of approximately 7.67 carats in a border of tapered baguette cut diamonds, accented by two marquise cut diamonds, no assay marks, size I1/2 / 4.5, 12.3g. 

Estimate £2,000 - £3,000

STEPHEN WEBSTER, A TSAVORITE GARNET AND DIAMOND POISON APPLE RING designed as an apple pave set with round cut tsavorite garnets and a round brilliant cut diamond, opening to reveal a locket compartment, the mount designed as two jewelled hands, SW m

Estimate £3,000 - £5,000

VAN CLEEF & ARPELS, A DIAMOND HEART RING in 18ct yellow gold and platinum, designed as a heart pave set with round brilliant cut diamonds, inscribed 0.30CT, signed VCA and numbered, French assay marks, stamped 18KT, size L1/2 / 6, 9.9g. 

Estimate £2,000 - £3,000

MARINA B., A PERIDOT PATRIZIA RING set with an oval cut peridot, signed Marina B, stamped 750, size M1/2 / 6.5, 10.7g. 

Estimate £1,800 - £2,200

AN EGYPTIAN REVIVAL LAPIS LAZULI SCARAB BEETLE RING set with a cabochon lapis lazuli carved as a scarab beetle, no assay marks, size N / 6.75, 8.1g. 

Estimate £400 - £600

A BLACK OPAL AND DIAMOND CLUSTER RING set with an oval cabochon black opal of approximately 11.14 carats in a cluster of round brilliant cut diamonds, the diamonds totalling 1.3-1.6 carats, no assay marks, size N / 6.75, 17.0g. 

Estimate £7,000 - £9,000

A DIAMOND DRESS RING the stylised ring accented by pave set round brilliant cut diamonds, no assay marks, size Q / 8, 19.8g. 

Estimate £1,500 - £2,500

CARTIER, A GOLD CLASH DE CARTIER RING in 18ct rose gold, the band designed as a row of studs, signed Cartier and numbered, Swiss assay marks, stamped Au750, size Q / 8.25, 8.9g. Current retail price: £2,410.

Estimate £1,000 - £1,500

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 £2,500 - £3,500

AN OPAL AND DIAMOND CLUSTER RING set with a pear shaped cabochon opal in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.5-1.7 carats, stamped 18CT, size Q1/2 / 8.5, 9.9g. 

Estimate £800 - £1,200

AN ANTIQUE EMERALD AND DIAMOND CLUSTER RING in yellow gold and silver, set with a round cabochon emerald of approximately 8.50 carats in a cluster of old cut diamonds, no assay marks, size I1/2 / 4.5, 6.3g. 

Estimate £7,000 - £9,000

AN ANTIQUE FRENCH RUBY AND DIAMOND TIARA RING in 18ct yellow gold, set with three old cut diamonds, an oval and a round cut ruby, the band set with further old cut diamonds, French assay mark, size N / 6.75, 4.5g. 

Estimate £1,500 - £2,500

BOODLES, A FINE DIAMOND HALF ETERNITY RING in platinum, set with two rows of emerald cut diamonds, the diamonds totalling 5.19 carats, Boodles maker's mark, full British hallmarks, size L1/2 / 6, 13.8g. Accompanied by a Boodles ring box, original sal

Estimate £10,000 - £15,000

A TURQUOISE AND DIAMOND RING set with an oval cabochon turquoise, the fluted mount accented by round brilliant cut diamonds, stamped 750, size P / 7.75, 21.0g. 

Estimate £1,000 - £1,500

A SAPPHIRE AND DIAMOND DRESS RING set with a cluster of oval cabochon sapphires all totalling 11.01 carats, accented by round brilliant cut diamonds, inscribed 11.01 0.10, stamped 18K, size M / 6.25, 12.4g. 

Estimate £1,500 - £2,500

A BLACK OPAL AND DIAMOND RING set with an oval cabochon black opal of 1.29 carats, the shoulders set with round brilliant cut diamonds, inscribed 1.29 D0.32, stamped Pt900, size N / 6.75, 5.2g. 

Estimate £1,000 - £1,500

CARTIER, A DIAMOND LOVE RING set with eight round brilliant cut diamonds, signed Cartier and numbered, stamped Au750, size M / 6.25, 4.6g. Accompanied by a Cartier certificate of authenticity. Current retail price: £4,300. 

Estimate £1,800 - £2,200

A RUBY AND DIAMOND CLUSTER RING in rose gold and platinum, set with an oval cut ruby of approximately 1.10 carats in a cluster of round brilliant cut diamonds, each shoulder set with a rose cut diamond, stamped 750 PT950, size N / 6.75, 5.4g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of 1.55 carats, accented by pave set round brilliant cut diamonds, inscribed E1.55 D0.70, stamped Pt900, size L1/2 / 6, 5.8g. 

Estimate £2,500 - £3,500

A DIAMOND WISHBONE RING in platinum, half set with a row of baguette cut diamonds, inscribed 0.98ct, full British hallmarks, stamped PT950, size L1/2 / 6, 5.2g. 

Estimate £1,500 - £2,500

AN AQUAMARINE AND DIAMOND RING set with a cushion cut aquamarine of 14.50 carats in a border of round brilliant cut diamonds, the shoulders set with further diamonds, the diamonds all totalling 1.21 carats, stamped 750, size N1/2 / 7, 10.1g. 

Estimate £2,500 - £3,500

BULGARI, A DIAMOND B.ZERO1 RING in 18ct white gold, the band set with three rows of round brilliant cut diamonds, with engraved lettering 'BVLGARI' to the sides, signed Bulgari, Italian assay marks, stamped 750, size K1/2 / 5.5, 14.3g. 

Estimate £3,500 - £5,500

A BLACK OPAL AND DIAMOND RING set with an oval cabochon black opal of 5.21 carats, flanked by two baguette cut diamonds, inscribed 5.21 D0.68, stamped Pt900, size N / 6.75, 11.4g. 

Estimate £7,000 - £9,000

AN EMERALD, SAPPHIRE AND DIAMOND CROSSOVER RING in crossover design, set with a pear cut emerald and a pear cut sapphire, the band pave set with round brilliant cut diamonds, stamped 750, size M1/2 / 6.5, 4.6g. 

Estimate £800 - £1,200

A TANZANITE AND DIAMOND CLUSTER RING set with a cushion cut tanzanite of 3.38 carats in a cluster of round cut diamonds, the shoulders set with further round cut diamonds, stamped 950, size M / 6.25, 7.6g. 

Estimate £1,500 - £2,500

A RUBY, SAPPHIRE, EMERALD AND DIAMOND DRESS RING set with a square step cut emerald, oval cut sapphire and pear cut ruby, in borders of round brilliant cut diamonds, stamped 750, size L1/2 / 6, 5.9g. 

Estimate £1,000 - £1,500

A TANZANITE AND DIAMOND RING set with an oval cut tanzanite of 5.67 carats, accented on each side by trios of princess cut diamonds, stamped 750, size M / 6.25, 6.1g. 

Estimate £1,800 - £2,200

A PEARL AND DIAMOND CLUSTER RING set with a pearl of 8.6mm in a cluster of round brilliant cut diamonds, stamped 375, size M1/2 / 6.5, 3.6g. 

Estimate £400 - £600

BULGARI, A DIAMOND RING in 18ct yellow gold, the wide band with lettering 'BVLGARI' set with round brilliant cut diamonds, signed Bulgari, Italian assay marks, stamped 750, size N / 6.75, 13.3g. 

Estimate £1,500 - £2,500

A DIAMOND X RING the flexible band comprising a row of X motifs, the centre motif set with round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 8.4g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND THREE STONE RING set with an oval cut sapphire of 1.29 carats accented on each side by an emerald cut diamond, the diamonds totalling 0.50 carats, stamped 18K, size M1/2 / 6.5, 3.3g. 

Estimate £1,200 - £1,600

AN AQUAMARINE AND DIAMOND CLUSTER RING in platinum, set with a princess cut aquamarine of 0.63 carats, in a cluster of round cut diamonds, the shoulders accented by further round cut diamonds, full British hallmarks, size M1/2 / 6.5, 5.3g. 

Estimate £800 - £1,200

ROBERTO COIN, A DIAMOND POIS MOI RING pave set with a section of round brilliant cut diamonds, accented throughout with circular indents, signed RC, stamped 18KT, size N / 6.75, 11.4g. 

Estimate £1,000 - £1,500

AN UNHEATED RUBY AND DIAMOND RING set with an oval cabochon ruby of approximately 33.49 carats in a double cluster of round brilliant cut diamonds, the shoulders set with further diamonds, the diamonds all totalling approximately 9.27 carats, inscrib

Estimate £10,000 - £15,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND BALLERINA RING set with an oval cut sapphire of 2.39 carats in a border of round brilliant and tapered baguette cut diamonds, the diamonds totalling 2.19 carats, inscribed 2.39 D2.19, stamped Pt900, size K1/2 / 5

Estimate £3,000 - £5,000

AN EMERALD AND DIAMOND CLUSTER RING set with an oval cut emerald of 1.88 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 0.94 carats, stamped PT950, size L / 5.75, 6.8g. 

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND BOMBE RING set with an octagonal step cut sapphire of approximately 1.01 carats, the bombe face pave set with single and round brilliant cut diamonds, stamped 18Kt, size L1/2 / 6, 7.0g. 

Estimate £1,500 - £2,500

A BAND RING comprising a plain band, stamped K18 750, size N1/2 / 7, 7.2g. 

Estimate £400 - £600

BOUCHERON, A SAPPHIRE RING set with a round cabochon sapphire on a rope work mount, signed Boucheron Paris, marked indistinctly, size O / 7.25, 11.6g. 

Estimate £2,000 - £3,000

NINO D'ANTONIO GERMANO, A VINTAGE GOLD RING, CIRCA 1970 in 18ct yellow gold, the oval face in high relief depicting crab fishing man, artist's signature, stamped 750, size O1/2 / 7.5, 20.1g. 

Estimate £1,000 - £1,500

A COLOMBIAN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of 5.45 carats, accented by round brilliant cut diamonds, no assay marks, size N / 6.75, 12.8g. Accompanied by a facsimile gemmological report stating that the emerald is of

Estimate £20,000 - £25,000

A 3.51 CARAT KASHMIR SAPPHIRE AND DIAMOND RING set with an octagonal step cut sapphire of 3.51 carats, accented by three rows of round brilliant, baguette and carre cut diamonds, no assay marks, size P / 7.75, 12.5g. Accompanied by a facsimile gemmol

Estimate £20,000 - £25,000

A BURMA NO HEAT SPINEL AND DIAMOND RING set with a round cut spinel of 2.27 carats in a border of single cut diamonds, no assay marks, size N1/2 / 7, 5.8g. Accompanied by a facsimile GIA report stating that the spinel is of Burmese (Myanmar) origin w

Estimate £6,000 - £8,000

AN AMETHYST AND PEARL RING in 18ct yellow gold, set with a round cut amethyst in a border of pearls, full British hallmarks, size L / 5.75, 20.6g. 

Estimate £800 - £1,200

A DIAMOND RING, 19TH CENTURY AND LATER in yellow gold and silver, designed as a fleur de lis set with old cut diamonds, surmounted by an old cut diamond of approximately 1.23 carats, stamped 14K, size M1/2 / 6.5, 10.2g. 

Estimate £2,500 - £3,500

A SARDONYX INTAGLIO RING in yellow gold, set with a sardonyx intaglio carved to depict a family crest, marked indistinctly, size R1/2 / 9, 7.6g. 

Estimate £600 - £800

AN ANTIQUE EDWARDIAN BURMA NO HEAT RUBY AND DIAMOND RING in white gold, set with an oval cut ruby of approximately 1.00 carat, accented by further marquise and fancy cut rubies and single cut diamonds, no assay marks, size J / 4.75, 4.2g. Accompanied

Estimate £6,000 - £8,000

A SAPPHIRE AND DIAMOND RING set with an oval cabochon sapphire of approximately 9.95 carats in a border of single cut diamonds, stamped plat, size L1/2 / 6, 6.0g. 

Estimate £3,500 - £4,500

AN EMERALD AND DIAMOND CLUSTER RING set with an octagonal step cut emerald of 1.97 carats in a cluster of round cut diamonds, stamped 750, size M / 6.25, 5.9g. 

Estimate £2,500 - £3,500

BULGARI, A SOLITAIRE DIAMOND RING in platinum set with a round brilliant cut diamond of 0.35 carats, signed Bulgari, Italian assay marks, stamped 950, size J1/2 / 5, 5.5g. 

Estimate £800 - £1,200

A TEAL SAPPHIRE AND DIAMOND CLUSTER RING set with an octagonal step cut teal sapphire of 1.02 carats, in a cluster of round cut diamonds, the shoulders set with further round cut diamonds, stamped PT950, size M / 6, 5.5g. 

Estimate £1,000 - £1,500

AN UNHEATED PIGEON'S BLOOD RUBY AND DIAMOND CLUSTER RING set with an oval cut ruby of 2.97 carats in a cluster of round brilliant cut diamonds, further round brilliant cut diamonds set to the shoulders, inscribed R3.018 D1.81, stamped Pt900, size L1/

Estimate £30,000 - £40,000

A BLACK OPAL AND DIAMOND RING set with an oval cabochon black opal of 1.31 carats, the shoulders set with tapered baguette and round brilliant cut diamonds, inscribed 1.31 0.30, stamped Pt950, size K / 5.25, 5.2g. 

Estimate £1,000 - £1,500

AN ENAMEL BAND RING decorated all around with red enamel, stamped 14K, size K / 5.25, 2.6g. 

Estimate £200 - £300

BULGARI, A RUBY AND DIAMOND RING set with an oval cut ruby of 1.15 carats, accented by pave set round brilliant cut diamonds, signed Bvlgari, inscribed 1.15cts, stamped 750, size O / 7.25, 6.3g. 

Estimate £3,500 - £5,500

BULGARI, A PINK TOURMALINE TRONCHETTO RING in 18ct yellow gold, set with a cabochon pink tourmaline, signed Bulgari, Italian assay marks, stamped 750, size K1/2 / 5.5, 11.4g. 

Estimate £1,500 - £2,500

A PINK TOURMALINE RING the brushed gold band set with a cushion cut pink tourmaline, stamped 18K, size J / 4.75, 10.8g. 

Estimate £600 - £800

A YELLOW SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut yellow sapphire of approximately 11.50 carats in a cluster of round brilliant cut diamonds all totalling approximately 1.50 carats, stamped 18K, size Q / 8, 11.8g. 

Estimate £6,000 - £8,000

A BURMA NO HEAT SPINEL AND DIAMOND CLUSTER RING set with an oval cut spinel of 1.63 carats in a cluster of round brilliant cut diamonds all totalling 1.00 carat, inscribed 1.63 D1.00, stamped Pt950, size L1/2 / 6, 6.0g. Accompanied by a facsimile GIA

Estimate £3,500 - £4,500

CARTIER, A DIAMOND RING pave set with round brilliant cut diamonds, the diamonds totalling 0.9-1.0 carats, signed Cartier and numbered, stamped PT, size K / 5.25, 7.6g. 

Estimate £2,500 - £3,500

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

A CITRINE AND DIAMOND HEART RING set with a heart shaped citrine of approximately 17.20 carats in a border of round brilliant cut diamonds all totalling approximately 1.00 carat, sizing band size P / 7.75, 12.4g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND CLUSTER RING set with a marquise cut ruby of 1.55 carats in a cluster of round cut diamonds, accented by two baguette cut diamonds, stamped PT950, size M / 6.25, 6.0g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND THREE STONE RING in 18ct yellow gold, set with an octagonal step cut emerald of approximately 1.89 carats between two round brilliant cut diamonds, the diamonds both totalling approximately 1.04 carats, partial British hallmark

Estimate £1,200 - £1,800

A DIAMOND HALF ETERNITY RING half set with a row of baguette cut diamonds, the diamonds totalling 1.50 carats, stamped 750, size M1/2 / 6.5, 3.1g. 

Estimate £1,500 - £2,500

CARTIER, A DIAMOND SIGNATURE RING in 18ct white gold, designed as the signature 'Cartier', set with round brilliant cut diamonds, signed Cartier and numbered, Italian assay marks, stamped 750, size K1/2 / 5.5, 4.3g. 

Estimate £600 - £800

A BLUE TOPAZ AND DIAMOND RING set with an octagonal step cut blue topaz of approximately 5.04 carats, the shoulders set with round brilliant cut diamonds, signed Jupiter, stamped 14K, size L / 5.75, 7.9g. 

Estimate £800 - £1,200

BULGARI, A B.ZERO 1 RING in 18ct white gold, the band with engraved lettering 'BVLGARI' to the sides, signed Bulgari and numbered, Italian assay marks, stamped Au750, size N1/2 / 7, 7.9g. 

Estimate £600 - £800

A PINK TOURMALINE AND DIAMOND RING set with a cushion cut pink tourmaline of 20.22 carats, accented by round brilliant cut diamonds, inscribed 20.22, stamped 18K, size M / 6.25, 11.0g. 

Estimate £6,000 - £8,000

A CEYLON NO HEAT COLOUR CHANGE SAPPHIRE, DIAMOND AND ENAMEL CLUSTER RING set with a pear cut sapphire of approximately 4.50 carats in a cluster of round cut diamonds, accented by blue enamel, stamped 14K, size R / 8.75, 8.1g. Accompanied by a facsimi

Estimate £10,000 - £15,000

AN AQUAMARINE AND DIAMOND CLUSTER RING set with an oval cut aquamarine of 1.84 carats in a cluster of round cut diamonds, the shoulders accented by further round cut diamonds, stamped 950, size N / 6.75, 5.9g. 

Estimate £1,200 - £1,600

A FANCY LIGHT BROWNISH PINK DIAMOND RING set with a cushion cut fancy light brownish pink diamond of 0.28 carats in a double cluster of round brilliant cut diamonds, the band accented with further diamonds, inscribed 0.233 0.75, stamped PT950, size L

Estimate £2,000 - £3,000

A PINK TOURMALINE AND COGNAC DIAMOND COCKTAIL RING set with a cushion cut pink tourmaline of approximately 19.90 carats, the gallery and band accented by round cut cognac diamonds, stamped 750, sizing beads size I / 4.25, 12.3g. 

Estimate £8,000 - £12,000

AN EMERALD AND DIAMOND CLUSTER RING set with an octagonal step cut emerald of 0.79 carats in a cluster of round cut diamonds, the shoulders set with further round cut diamonds, full British hallmarks, size L1/2 / 6, 8.3g. 

Estimate £1,500 - £2,500

AN ALEXANDRITE AND DIAMOND RING set with an oval cut alexandrite of 0.37 carats, the stylised band accented by round brilliant and marquise cut diamonds, inscribed 0.37 d0.017, stamped Pt900, size L / 5.75, 6.4g. 

Estimate £1,500 - £2,500

A KUNZITE AND DIAMOND DRESS RING set with an oval cut kunzite of approximately 62.81 carats, accented by trios of round brilliant cut diamonds, inscribed 62.82 D0.30, stamped Pt900, size M / 6.25, 33.6g. 

Estimate £2,500 - £3,500

A BLACK PEARL AND DIAMOND CLUSTER RING set with a black pearl of 11.8mm in a border of round brilliant cut diamonds, stamped 750 18K, size M / 6.25, 8.9g. 

Estimate £1,000 - £1,500

A RHODOLITE GARNET AND DIAMOND RING set with a cushion cut garnet of approximately 7.15 carats in a cluster of round brilliant cut diamonds all totalling approximately 0.75 carats, stamped 18K, size Q / 8, 7.4g. 

Estimate £1,500 - £2,500

AN 11.83 CARAT CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with a round cut sapphire of 11.83 carats, the stepped shoulders set with princess and baguette cut diamonds, stamped 750, size R1/2 / 9, 12.0g. 

Estimate £6,000 - £8,000

A DIAMOND HALF ETERNITY RING half set with a row of round brilliant cut diamonds, the diamonds totalling 1.34 carats, inscribed 7/1.34, stamped 750, size N / 6.75, 3.8g. 

Estimate £800 - £1,200

A 2.00 CARAT SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of 2.00 carats, the shoulders set with further round brilliant cut diamonds, stamped 750, size M1/2 / 6.5, 3.2g. Accompanied by a gemmological report stating the diamond is H

Estimate £7,000 - £9,000

GELLNER, A BAROQUE PEARL AND DIAMOND RING the abstract ring set with a baroque pearl and accented by round brilliant cut blue and white diamonds, signed Gellner, inscribed 0.71ct, stamped 750, size O1/2 / 7.5, 42.4g.

Estimate £2,000 - £3,000

A GREEN BERYL, RUBY AND DIAMOND RING set with a cushion cut green beryl of 7.43 carats in concentric border of round cut diamonds, accented by four pear cabochon rubies, no assay marks, size N / 6.75, 6.9g. 

Estimate £300 - £500

A COLLECTION OF TANZANITE AND DIAMOND RINGS comprising a tanzanite and diamond dress ring set with a pear cut tanzanite in a border of round cut diamonds, the bifurcated band set with further round cut diamonds, stamped 18ct, size O1/2 / 7.5, 4.6g, a

Estimate £300 - £500

SALAVETTI, A FANCY DEEP YELLOW DIAMOND FLOWER RING set with a cut-cornered square modified brilliant cut diamond of 2.05 carats, accented by round brilliant cut diamonds, signed Salavetti, stamped 750, size O1/2 / 7.5, 12.5g. Accompanied by a facsimi

Estimate £20,000 - £25,000

A TANZANITE AND DIAMOND RING set with a cushion cut tanzanite of approximately 2.90 carats, the shoulders accented by round brilliant cut diamonds, stamped Pt950, size M / 6.25, 9.0g. 

Estimate £1,000 - £1,500

SCHLUMBERGER STUDIOS FOR TIFFANY & CO., A DIAMOND VIGNE RING the openwork ring in foliate design, set throughout with round brilliant and marquise cut diamonds, the diamonds totalling 2.5-2.7 carats, signed Schlumberger Studios, signed Tiffany & Co.,

Estimate £8,000 - £12,000

A PINK TOURMALINE AND DIAMOND DRESS RING set with an oval cabochon pink tourmaline of approximately 23.04 carats, accented by pave set round cut diamonds, the diamonds totalling 2.6-2.8 carats, no assay marks, size N1/2 / 7, 21.0g. 

Estimate £2,500 - £3,500

AN UNHEATED SAPPHIRE AND DIAMOND RING set with a cushion cut sapphire of 6.80 carats, the band accented by round brilliant cut diamonds, stamped 750, size L1/2 / 6, 5.7g. Accompanied by a facsimile GIA report stating that the sapphire is of Thai orig

Estimate £15,000 - £20,000

BUCCELATTI, A CHRYSOPRASE RING set with an oval cabochon chrysoprase, signed M Buccelatti, stamped 750, size Q / 8, 16.2g. 

Estimate £3,500 - £5,500

A RUBY AND DIAMOND CLUSTER RING set with an oval cut ruby of 1.38 carats in a cluster of round cut diamonds, accented by two baguette cut diamonds, the shoulders set with further round cut diamonds, stamped PT950, size M / 6.25, 5.6g. 

Estimate £1,500 - £2,500

A CAT'S EYE CHRYSOBERYL AND DIAMOND BALLERINA RING set with an oval cabochon cat's eye chrysoberyl in an undulating border set with tapered baguette and round brilliant cut diamonds, inscribed 2 41 0.82, stamped Pt900, size M1/2 / 6.5, 7.6g. 

Estimate £1,000 - £1,500

A SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of approximately 2.00 carats, stamped 585, size N / 6.75, 3.8g. Accompanied by a facsimile gemmological report stating that the diamond is H colour and I2 clarity. 

Estimate £1,500 - £2,500

CARTIER, A FINE DIAMOND DRESS RING in 18ct yellow gold, set with a pear cut diamond of 1.44 carats, accented by pave set round brilliant cut diamonds, the diamonds all totalling 3.8-4.2 carats, signed Cartier and numbered, French assay marks, stamped

Estimate £15,000 - £20,000

A RETRO RUBY AND DIAMOND DRESS RING in white gold, set with an old European cut diamond of approximately 0.60 carats in a border of carre cut diamonds and round cut rubies, accented by a row of rectangular step cut rubies, on a trifurcated band, no a

Estimate £1,800 - £2,200

TIFFANY & CO., A DIAMOND T WIDE RING designed as two T motifs pave set with round brilliant cut diamonds, the diamonds totalling 0.55-0.65 carats, signed TIFFANY & CO., stamped AU750, size L / 5.75, 6.9g. 

Estimate £2,500 - £3,500

AN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of approximately 2.26 carats in a border of round brilliant and baguette cut diamonds, the shoulders set with further round brilliant cut diamonds, the diamonds totalling 0.75 carats,

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of 1.00 carat in a cluster of round brilliant cut diamonds, no assay marks, size M / 6.25, 3.5g. 

Estimate £700 - £900

AN UNHEATED RUBY AND DIAMOND RING set with a round cut ruby of 1.95 carats accented by round brilliant and baguette cut diamonds, the diamonds all totalling 1.15 carats, inscribed 1.958 1.15, stamped Pt900, size M / 6.25, 11.8g. With a gemmological v

Estimate £3,500 - £5,500

A SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of 1.43 carats in a cluster of round cut diamonds, the shoulders accented by further round cut diamonds, stamped PT950, size M / 6, 5.2g. 

Estimate £2,000 - £3,000

A DIAMOND CLUSTER RING in 18ct yellow and white gold, set with a cluster of round brilliant cut diamonds, full British hallmarks for Birmingham 1992, size J1/2 / 5, 3.3g. 

Estimate £500 - £700

JOOP, A BAND RING in 18ct yellow and white gold, the plain band accented by a cross motif, signed JOOP!, German assay marks, stamped 750, size M1/2 / 6.5, 20.5g. 

Estimate £1,200 - £1,600

GARRARD, A CEYLON NO HEAT PADPARADSCHA SAPPHIRE AND DIAMOND CLUSTER RING in 18ct gold and platinum, set with an oval cut sapphire of 1.59 carats in a cluster of round brilliant cut diamonds, the band accented by further diamonds, the diamonds all tot

Estimate £15,000 - £20,000

A JADEITE JADE AND DIAMOND RING set with an oval cabochon jadeite jade in a border of tapered baguette cut diamonds, accented by marquise cut diamonds, stamped 18K, size K / 5.25, 4.5g. Accompanied by a facsimile GIA report stating that the jade is t

Estimate £2,000 - £3,000

A GOLDEN PEARL AND DIAMOND CLUSTER RING set with a pearl of 11.9mm in a cluster of round brilliant cut diamonds, the diamonds totalling 1.5-1.7 carats, stamped PLAT, size M / 6.25, 9.8g. 

Estimate £1,000 - £1,500

A DIAMOND FULL ETERNITY RING set all around with a row of baguette cut diamonds, no assay marks, size Q1/2 / 8.5, 4.1g. 

Estimate £600 - £800

A PINK SAPPHIRE AND DIAMOND RING set with an oval cut pink sapphire of 1.84 carats, the shoulders pave set with round brilliant cut diamonds, stamped 18K, size N1/2 / 7, 3.8g. 

Estimate £2,200 - £2,600

CARTIER, A DIAMOND C DE CARTIER RING in 18ct white gold, the band designed as a row of double C motifs, one pave set with round brilliant cut diamonds, signed Cartier and numbered, Swiss assay marks, stamped 750, size L / 5.75, 7.7g. 

Estimate £1,000 - £1,500

A SAPPHIRE AND DIAMOND CLUSTER RING set with a round cut sapphire of 0.73 carats in a cluster of round cut diamonds, accented by baguette cut diamonds, the shoulders accented by further round cut diamonds, stamped PT950, size M / 6, 5.8g. 

Estimate £1,200 - £1,600

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of 1.44 carats in a cluster of round cut diamonds totalling 0.95 carats, full British hallmarks, size N1/2 / 7, 4.8g. 

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an oval cut sapphire of 1.98 carats, accented by two half moon cut diamonds, full British hallmarks, size M1/2 / 6.5, 5.4g. 

Estimate £4,000 - £6,000

A RUBY AND DIAMOND BELT RING the flexible ring designed as a belt, accented by single cut diamonds and calibre cut rubies, no assay marks, size adjustable, 10.0g. 

Estimate £1,000 - £1,500

A DIAMOND HEART RING set with a fancy heart cut diamond of 1.02 carats in a border of round brilliant cut diamonds, the shoulders set with further round cut diamonds, the diamonds all totalling 1.27 carats, stamped 750, size N / 6.75, 2.8g. 

Estimate £2,000 - £3,000

A PEARL CLUSTER RING set with a cluster of pearls, stamped 14K, size J / 4.75, 4.7g. 

Estimate £200 - £300

CARTIER, A GOLD TRINITY RING the gold band accented by a tricolour trinity motif, signed Cartier 1995 and numbered, stamped 750, size O / 7.25, 11.0g. 

Estimate £500 - £700

A COGNAC DIAMOND FLOWER RING / BROOCH / PENDANT the petals pave set with round cut cognac diamonds, detachable from the ring mount to be worn as a brooch or pendant, stamped 750, ring size N1/2 / 7, 3.5cm, 25.4g. 

Estimate £1,000 - £1,500

A GREEN TOURMALINE AND DIAMOND RING set with an oval cut green tourmaline of 5.84 carats in a stylised border set with round cut diamonds, inscribed 5.84 D0.25, stamped Pt900 K18, size L / 5.75, 12.3g. 

Estimate £1,800 - £2,200

A PINK TOURMALINE TOURMALINE AND DIAMOND RING set with an oval cut pink tourmaline of 2.74 carats, the stepped shoulders set with round brilliant cut diamonds, stamped Pt900, inscribed 2.74 D0.20, size L / 5.75, 7.0g. 

Estimate £1,000 - £1,500

BULGARI, A DIAMOND BAND RING in platinum, comprising a stylised band set with a round brilliant cut diamond, signed Bulgari and numbered, Italian assay marks, stamped 950, size H / 3.75, 4.7g. 

Estimate £400 - £600

NO RESERVE - A PEARL AND DIAMOND TOI ET MOI RING set with a black and white pearl of 8.8mm respectively, accented by baguette cut diamonds, marked indistinctly, size L / 5.75, 6.6g. 

Estimate £250 - £350

JOOP, A PINK TOURMALINE RING set with a square step cut pink tourmaline, signed JOOP!, stamped 750, size L / 5.75, 14.6g. 

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND CLUSTER RING set with a marquise cut sapphire of 0.91 carats in a cluster of round cut diamonds, accented by two baguette cut diamonds, stamped PT950, size M1/2 / 6.25, 5.4g. 

Estimate £1,200 - £1,600

A GREEN TOURMALINE AND DIAMOND RING set with a cushion cut green tourmaline of 3.77 carats in a border of round cut diamonds, further round cut diamonds set to the shoulders, stamped 14K, size N / 6.75, 3.9g. 

Estimate £700 - £900

AN EMERALD AND DIAMOND RING set with an oval cut emerald of 1.22 carats accented by round brilliant and baguette cut diamonds, the diamonds totalling 0.70 carats, stamped 750, size N1/2 / 7, 3.2g. 

Estimate £1,200 - £1,600

A THREE STONE DIAMOND RING in 18ct rose gold, set with three round brilliant cut diamonds all totalling approximately 2.15 carats, partial British hallmarks, size M / 6.25, 3.7g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND RING the geometric face set with three round brilliant cut diamonds, accented by calibre cut sapphires and round brilliant cut diamonds, the band accented by further diamonds, stamped 18K, size L1/2 / 6, 5.0g. 

Estimate £1,500 - £2,500

A BURMA NO HEAT RUBY AND DIAMOND RING set with an oval cut ruby of 3.05 carats between two trillion cut diamonds, stamped 18K PLAT, size K1/2 / 5.5, 8.1g. Accompanied by a facsimile gemmological report stating that the ruby is of Burmese origin with

Estimate £20,000 - £25,000

A GREEN TOURMALINE AND DIAMOND RING set with an oval cut cut green tourmaline of 3.31 carats in a stylised cluster of round brilliant and tapered baguette cut diamonds, inscribed 3.31 D0 61, stamped Pt900, stamped K / 5.25, 8.0g. 

Estimate £1,000 - £1,500

A BLACK OPAL AND DIAMOND BALLERINA RING set with an oval cabochon black opal of 1.37 carats in an undulating border set with marquise, round and tapered baguette cut diamonds, inscribed 1.37 0.68, stamped pt900, size N / 6.75, 8.8g. 

Estimate £1,000 - £1,500

A RUBY AND DIAMOND CLUSTER RING set with an oval cut ruby of 1.50 carats in a cluster of round cut diamonds, the shoulders accented by further round cut diamonds, stamped PT950, size L / 5.75, 6.8g. 

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND CLUSTER RING set with an octagonal step cut emerald of 1.39 carats in a cluster of round and princess cut diamonds, the shoulders set with further round cut diamonds, stamped PT950, size M / 6, 5.6g. 

Estimate £2,000 - £3,000

A TANZANITE, YELLOW DIAMOND AND DIAMOND RING set with an octagonal step cut tanzanite of approximately 3.41 carats, the gallery accented by round brilliant cut yellow diamonds and round brilliant cut white diamonds, stamped 750, size O / 7.25, 8.9g. 

Estimate £1,200 - £1,600

BULGARI, A DIAMOND ETERNITY RING in platinum, set all around with a row of round brilliant cut diamonds, signed Bulgari, Italian assay marks, Swiss assay marks, stamped 950, size H / 3.75, 4.6g. 

Estimate £1,500 - £2,500

A DIAMOND CLUSTER RING in platinum, set with a cushion cut diamond of 0.37 carats, in a cluster of round cut diamonds, the shoulders set with further round cut diamonds, full British hallmarks, size M1/2 / 6.25, 4.7g. 

Estimate £1,000 - £1,500

A RUBY AND DIAMOND DRESS RING set throughout with round brilliant cut diamonds and calibre cut rubies, no assay marks, size P1/2 / 8, 7.4g. 

Estimate £500 - £700

A SOLITAIRE DIAMOND RING in 18ct rose gold, set with a round brilliant cut diamond of approximately 1.11 carats, partial British hallmarks, size M / 6.25, 2.8g. 

Estimate £1,000 - £1,500

AN EMERALD AND DIAMOND CLUSTER RING set with a round cut emerald in a cluster of round cut diamonds, stamped 18K, size M1/2 / 6.5, 3.3g. 

Estimate £700 - £900

BULGARI, A DIAMOND AND ONYX FLIP RING in 18ct white gold, the swiveling circular face set to one side with round brilliant cut diamonds and the other with polished onyx, signed Bulgari, Italian assay marks, stamped 750, size J1/2 / 5, 5.9g. 

Estimate £600 - £800

A TANZANITE AND DIAMOND RING set with a cushion cut tanzanite of approximately 3.84 carats, the stylised mount accented by round brilliant cut diamonds, no assay marks, size L1/2 / 6, 7.4g. 

Estimate £800 - £1,200