AN ART DECO AQUAMARINE AND DIAMOND RING, EARLY 20TH CENTURY set with an octagonal step cut aquamarine of approximately 2.06 carats, the shoulders accented by single cut diamonds, no assay marks, size P1/2 / 8, 3.8g. 

Estimate £150 - £250

CARRERA Y CARRERA, A SOL Y SOMBRA RING the gold band suspending a sun shaped charm, Carrera y Carrera maker's mark and numbered, stamped 750, size L1/2 / 6, 6.1g. 

Estimate £400 - £600

CARRERA Y CARRERA, A DIAMOND SOL Y SOMBRA RING the gold band suspending a sun shaped charm set with a round brilliant cut diamond, Carrera y Carrera maker's mark and numbered, stamped 750, size M1/2 / 6.5, 6.2g. 

Estimate £500 - £700

BULGARI, A GOLD B.ZERO1 RING in 18ct yellow gold, the band with engraved lettering 'BVLGARI' to the sides, signed Bulgari, Italian assay marks, stamped 750, size L / 5.75, 11.3g. 

Estimate £500 - £700

A VINTAGE SAPPHIRE AND DIAMOND THREE STONE RING in 18ct white gold, set with an oval cut sapphire of approximately 3.59 carats, accented on each side by a round brilliant cut diamond, the diamonds totalling 1.4-1.6 carats, HCLtd maker's mark, stamped

Estimate £500 - £700

CARTIER, A JUSTE UN CLOU RING in 18ct rose gold, designed as a bent nail, signed Cartier and numbered, Swiss assay marks, stamped Au 750, Cartier size 48, size K / 5.25, 3.2g. Accompanied by the original Cartier jewellery box and certificate of authe

Estimate £500 - £700

AN ANTIQUE DIAMOND FIVE STONE RING in 18ct yellow gold, set with a graduating row of old cut diamonds totalling 1.5-1.7 carats, stamped 18CT, size M / 6.25, 4.6g. 

Estimate £300 - £500

STEPHEN WEBSTER, A BLUE AGATE, ROCK CRYSTAL AND DIAMOND CRYSTAL HAZE RING in 18ct yellow gold, set with a slice of blue agate beneath a faceted rock crystal dome, accented by a border of round brilliant cut diamonds, Stephen Webster maker's mark, ful

Estimate £1,200 - £1,600

NO RESERVE - AN AQUAMARINE RING set with a pear cut aquamarine of approximately 5.45 carats, stamped 14K, size adjustable, 6.0g. 

Estimate £300 - £500

VAN CLEEF & ARPELS, A GOLD PERLEE RING the wide band inscribed 'Van Cleef & Arpels', accented by a beaded border, signed VCA and numbered, stamped Au 750, size M1/2 / 6.5, 8.7g. 

Estimate £600 - £800

MONTURE MAUBOUSSIN, A FINE BURMA NO HEAT 8.56 CARAT SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with cushion cut sapphire of 8.56 carats accented by pave set round brilliant cut diamonds, the bifurcated band set all around with further pa

Estimate £20,000 - £30,000

CARTIER, A GOLD BAND RING, 1992 in 18ct yellow gold, of plain design, signed Cartier 1992 and numbered, control marks for 18ct gold, stamped 750, size K1/2 / 5.5, 8.8g. 

Estimate £600 - £800

A SAPPHIRE AND DIAMOND RING AND A DIAMOND DRESS RING comprising a sapphire and diamond ring, set with pear cut sapphires and round brilliant cut diamonds, no assay marks, size J1/2 / 5, 3.3g, together with a diamond dress ring set with round brillian

Estimate £400 - £600

CARTIER, A DIAMOND LOVE RING in 18ct white gold, the band punctuated by six screw head motifs, set with three round brilliant cut diamonds, signed Cartier and numbered, Swiss assay marks, stamped Au750, size O / 7.25, 9.5g. Accompanied by a Cartier j

Estimate £600 - £800

A FINE SAPPHIRE AND DIAMOND RING set with a mixed cut sapphire of approximately 3.22 carats, the stepped shoulders set with baguette cut diamonds totalling 0.6-0.7 carats, no assay marks, size M1/2 / 6.5, 4.0g. 

Estimate £5,000 - £7,000

AN EMERALD AND DIAMOND RING in 18ct white gold, set with four oval cut emeralds accented by a border of round brilliant cut diamonds, full British hallmarks for London 2001, stamped 750 18K, size M / 6.25, 5.4g. 

Estimate £400 - £600

A 9.82 CARAT PARAIBA TOURMALINE AND DIAMOND RING set with a paraiba tourmaline of 9.82 carats in a cluster of round brilliant cut diamonds, stamped 14K, size N / 6.75, 7.7g. Accompanied by a GIA report stating that the tourmaline is copper and mangan

Estimate £3,000 - £5,000

A FINE 3.18 CARAT ZAMBIAN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of 3.18 carats, accented on each side by pairs of baguette cut diamonds, inscribed 3.19 0.25, stamped 750, size N1/2 / 7, 4.8g. Accompanied by a GIA report stat

Estimate £10,000 - £15,000

CARTIER, A GOLD AND CERAMIC TRINITY RING comprising three interlocking white gold and ceramic bands, signed Cartier and numbered, stamped 750, size P1/2 / 8, 7.6g. Accompanied by a Cartier jewellery box. Current retail price: £1,750. 

Estimate £500 - £700

AN ANTIQUE EDWARDIAN DIAMOND AND ENAMEL RING in yellow gold and platinum, set with three old cut diamonds totalling 0.8-0.9 carats, accented by blue and white enamel, French import marks, size E1/2 / 2.75, 4.7g. 

Estimate £2,000 - £3,000

CARTIER, A GOLD WEDDING BAND / RING in 18ct yellow gold, of plain design, signed Cartier and numbered, Swiss assay marks, stamped 750, size Q / 8.25, 2.7g. 

Estimate £200 - £300

AN ANTIQUE SAPPHIRE AND DIAMOND NAVETTE RING in 18ct yellow gold and silver, the navette face set with a cushion cut sapphire of approximately 0.77 carats accented by rose cut diamonds, A&W maker's mark, stamped 18, size P / 7.75, 6.4g. 

Estimate £400 - £600

AN ANTIQUE GLASS CAMEO AND ENAMEL RING in 18ct yellow gold, set with an oval glass cameo moulded to depict the bust of a classical woman wearing a grape wreath, the gallery decorated with black enamel, the shoulders decorated with black and white ena

Estimate £1,800 - £2,200

AN ANTIQUE SAPPHIRE GYPSY RING in 22ct yellow gold, set with an oval cut sapphire of approximately 0.92 carats, indistinct maker's mark, stamped 22CT, size P1/2 / 8, 6.3g. 

Estimate £500 - £700

AN ANTIQUE AGATE ST GEORGE AND THE DRAGON INTAGLIO RING in yellow gold, set with a brown agate intaglio carved to depict St. George on the back of a horse, slaying the dragon, French import marks, size J / 4.75, 5.8g.

Estimate £600 - £800

AN ANTIQUE DIAMOND DRESS RING in yellow gold and silver, the scrolling ring set with three principal rose cut diamonds, accented by old cut diamonds, no assay marks, size K1/2 / 5.5, 5.5g. 

Estimate £3,000 - £5,000

A FINE RETRO FRENCH DIAMOND RING in platinum and yellow gold, the ring face pave set with flat topped square step cut diamonds, the diamonds totalling 1.2-1.4 carats, the shoulders accented by gold shoulders, French assay marks, size G1/2 / 3.5, 11.0

Estimate £400 - £600

AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with three oval cut sapphires totalling 1.7-1.9 carats, accented by pairs of old cut diamonds, stamped 18CT, size N1/2 / 7, 5.0g. 

Estimate £300 - £500

A RUBY AND DIAMOND RING in 18ct yellow gold, set with an oval cut ruby of approximately 2.09 carats, accented by pairs of round brilliant cut diamonds, full British hallmarks for Birmingham 2007, size P1/2 / 8, 5.0g. 

Estimate £300 - £500

A DIAMOND CLUSTER RING in 18ct yellow gold, set with a row of baguette cut diamonds in a cluster of round brilliant cut diamonds, the diamonds totalling 1.4-1.6 carats, full British hallmarks for London 1988, size M1/2 / 6.5, 4.6g. 

Estimate £300 - £500

STEPHEN WEBSTER, A TURQUOISE, ROCK CRYSTAL AND DIAMOND CRYSTAL HAZE RING in 18ct white gold, set with a slice of turquoise beneath a faceted rock crystal dome, accented by a border of round brilliant cut diamonds, Stephen Webster maker's mark, full B

Estimate £1,200 - £1,600

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING, EARLY 20TH CENTURY in platinum, set with a square step cut sapphire accented by a border of single cut diamonds, stamped PLAT, size L / 5.75, 3.0g. 

Estimate £100 - £150

AN AMETHYST AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut amethyst of approximately 5.73 carats, accented by a cluster of round brilliant cut diamonds, partial British hallmarks, size N / 6.75, 8.8g. 

Estimate £500 - £700

AN ART DECO JADEITE JADE RING, CIRCA 1937 in platinum, set with an oval cabochon jadeite jade, inscribed 'J.H.C - 15.9.1937', size M / 6.25, 4.0g. 

Estimate £200 - £300

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold and platinum, set with a cushion cut sapphire of approximately 1.99 carats, accented by border of round brilliant and marquise cut diamonds, full British hallmarks for London 1965, stamped PLAT, size M1

Estimate £300 - £500

AN ART DECO DIAMOND FIVE STONE RING in platinum and 18ct white gold, set with a row of five graduating old cut diamonds, stamped PLAT 18, size Q1/2 / 8.5, 2.6g. 

Estimate £300 - £500

A VINTAGE DIAMOND DRESS RING in 18ct yellow gold, the crossover ring in stylised foliate design, accented by rows of round brilliant cut diamonds, stamped 750, size Q / 8.25, 14.1g. 

Estimate £800 - £1,200

AN ANTIQUE DIAMOND BELCHER RING in 18ct yellow gold, set with an old cut diamond of approximately 0.86 carats, partial British hallmarks, size O / 7.25, 5.9g. 

Estimate £500 - £700

AN ART DECO STAR CEYLON NO HEAT PINK SAPPHIRE AND DIAMOND RING in platinum, set with an oval cabochon star ruby of approximately 8.18 carats, accented by single cut diamonds, French import marks, size M1/2 / 6.5, 6.1g. With a gemmological verbal asse

Estimate £6,000 - £8,000

A SOLITAIRE DIAMOND RING in 18ct white gold, set with a round brilliant cut diamond of 0.91 carats, partial British hallmarks, size N / 6.75, 3.2g. Accompanied by a GIA report stating the diamond is J colour and VS2 clarity. 

Estimate £500 - £700

A MOONSTONE AND SAPPHIRE CLUSTER RING set with a round cabochon moonstone, accented by a cluster of round cut sapphires, stamped 585, size O / 7.25, 6.1g. 

Estimate £300 - £500

A SOLITAIRE DIAMOND RING set with a pear cut diamond of approximately 2.68 carats, no assay marks, size M1/2 / 6.5, 5.1g. 

Estimate £5,000 - £7,000

A DIAMOND BUBBLE RING comprising three bands set with round brilliant cut diamonds totalling 2.00 carats, inscribed 9/2.00ct, stamped 18K, size N / 6.75, 7.3g. 

Estimate £1,800 - £2,400

A TSAVORITE GARNET AND DIAMOND CLUSTER RING set with an oval cut tsavorite garnet of 2.64 carats in a cluster of round brilliant cut diamonds, inscribed T2.64 D0.64, stamped 750, size N1/2 / 7, 4.3g. 

Estimate £1,500 - £2,500

A FINE AQUAMARINE AND DIAMOND DRESS RING in platinum, set with an octagonal step cut aquamarine of approximately 23.15 carats, the shoulders set with old European and single cut diamonds, partial British hallmarks, size O1/2 / 7.5, 13.3g.

Estimate £3,000 - £5,000

AN ANTIQUE DIAMOND AND RUBY DRESS RING in 14ct yellow gold, set with a cluster of old cut diamonds within a border of calibre cut rubies, the shoulders set with further diamonds, stamped 585, size M1/2 / 6.5, 2.6g. 

Estimate £500 - £700

AN ANTIQUE EDWARDIAN DIAMOND DRESS RING set with an old European cut diamond of approximately 1.12 carats, accented by old and rose cut diamonds, no assay marks, size O1/2 / 7.5, 2.9g. 

Estimate £1,500 - £2,500

A TURQUOISE AND DIAMOND CLUSTER RING set with an oval cabochon turquoise in a cluster of transitional cut diamonds, the diamonds totalling 1.0-1.2 carats, stamped PLAT, size N1/2 / 7, 5.4g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND THREE STONE RING set with an oval cut sapphire of approximately 2.52 carats accented on each side by a cushion cut diamond, the diamonds both totalling 1.9-2.1 carats, stamped 18CT, size N1/2 / 7, 4.5g. 

Estimate £6,000 - £8,000

HARLE PARIS, A TOURMALINE AND DIAMOND MAXIMALIST RING in 18ct white gold, set with an oval cut pink and green tourmaline, accented by a pear cut brown and white diamond, inscribed 5.41ct  D0.73ct, HP maker's mark, partial British hallmarks, size N /

Estimate £2,000 - £3,000

A FINE SOLITAIRE DIAMOND RING set with an old European cut diamond of approximately 3.22 carats, the shoulders set with baguette cut diamonds, stamped PLATINUM, size M1/2 / 6.5, 5.0g. 

Estimate £12,000 - £16,000

A FINE COLOMBIAN EMERALD AND DIAMOND RING in 18ct yellow gold, set with an octagonal step cut emerald of approximately 1.80 carats in a border of pave set round brilliant cut diamonds, French assay marks, size L1/2 / 6, 6.9g. Accompanied by a gemmolo

Estimate £4,000 - £6,000

AN ART DECO DIAMOND FULL ETERNITY RING set all around with a row of old European cut diamonds totalling 1.1-1.3 carats, no assay marks, size N / 6.75, 2.7g. 

Estimate £600 - £800

A FRENCH CEYLON NO HEAT SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with an oval cut sapphire of approximately 3.36 carats accented by round brilliant and marquise cut diamonds, the diamonds all totalling 1.7-1.9 carats, French assay mark

Estimate £3,000 - £5,000

A RUBY AND DIAMOND THREE STONE RING set with a cushion cut ruby of 1.55 carats between two old cut diamonds, the diamonds totalling 0.9-1.0 carat, no assay marks, size M / 6.25, 2.7g.

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with a cushion cut blue sapphire of approximately 5.04 carats, accented in each shoulder by a round brilliant cut diamond, stamped 18K, size S / 9.25, 10.7g.

Estimate £3,000 - £5,000

A FINE GREEN TOURMALINE AND DIAMOND DRESS RING set with an octagonal step cut green tourmaline of approximately 19.08 carats, accented by trios of round brilliant cut diamonds, no assay marks, size L1/2 / 6, 10.0g. 

Estimate £4,000 - £6,000

AN ANTIQUE SAPPHIRE AND DIAMOND RING in yellow gold, set with a round cut sapphire and old cut diamond, no assay marks, size M1/2 / 6.5, 5.5g. 

Estimate £500 - £700

HARLE PARIS, A MULTICOLOUR SAPPHIRE FULL ETERNITY RING in 18ct white gold, set all around with a row of round cut orange, yellow, green, blue and pink sapphires, inscribed 1.14, HP maker's mark, full British hallmarks, size P1/2 / 8, 2.3g. Accompanie

Estimate £500 - £700

HARLE PARIS, AN UNHEATED RUBY AND DIAMOND HEART OF A STARGAZER RING in platinum, set with an oval cut ruby of 0.62 carats, accented by rows of round brilliant cut diamonds, partial British hallmarks, stamped Pt900, size M1/2 / 6.5, 4.3g. Accompanied

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND DRESS RING set with four round cut sapphires in clusters of round brilliant cut diamonds, the sapphires totalling 0.8-1.0 carat, stamped 750, size Q1/2 / 8.5, 5.5g.

Estimate £400 - £600

A DIAMOND ETERNITY RING set all around with round brilliant cut diamonds totalling 1.0-1.2 carats, no assay marks, size J / 4.75, 4.6g. 

Estimate £800 - £1,200

A RUBY AND DIAMOND DRESS RING set with an oval cut ruby of approximately 0.72 carats within concentric borders of round cut diamonds, further diamonds set to the shoulders, no assay marks, size M1/2 / 6.5, 4.4g. 

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND DRESS RING set with an oval cut emerald of approximately 13.70 carats within a border of round brilliant and marquise cut diamonds, the gallery and bifurcated band set with further diamonds, stamped 750, size M1/2 / 6.5, 9.4g. 

Estimate £5,000 - £7,000

A 17.14 CARAT CEYLON NO HEAT STAR SAPPHIRE AND DIAMOND CLUSTER RING set with a cabochon sapphire of 17.14 carats in a border of round cut diamonds, the band set with further diamonds, inscribed S17.14 D0.50, stamped 750, size M1/2 / 6.5, 9.8g. Accomp

Estimate £10,000 - £15,000

A CITRINE AND DIAMOND DRESS RING set with a faceted citrine, the gallery and shoulders pave set with round cut diamonds, SMA maker's mark, size L / 5.75, 4.5g. 

Estimate £600 - £800

AN OPAL, EMERALD AND DIAMOND DRESS RING set with an oval cabochon opal accented on each side by a round cut emerald, within a border of round brilliant cut diamonds, inscribed 2.60ct 0.503ct d0.517ct, stamped Pt950, size N / 6.76, 6.6g.

Estimate £800 - £1,200

RENE KERN, A CHRYSOPRASE AND DIAMOND DRESS RING set with a cabochon chrysoprase of approximately 11.48 carats, accented by a foliate style border set with round brilliant and single cut diamonds, signed Kern and numbered, stamped 750, size K1/2 / 5.5

Estimate £800 - £1,200

A NATURAL SALTWATER PEARL AND DIAMOND DRESS RING in platinum, set with a pearl of 9.8mm accented by old cut diamonds totalling 0.5-0.7 carats, stamped PLAT, size M / 6.25, 6.3g. Accompanied by a gemmological report stating the pearl is of natural sal

Estimate £3,000 - £5,000

A DIAMOND FIVE STONE RING set with a row of graduating old cut diamonds totalling 0.6-0.7 carats, no assay marks, size M1/2 / 6.5, 2.6g. 

Estimate £500 - £700

AN ANTIQUE PEARL AND DIAMOND THREE STONE RING in platinum and 18ct white gold, set with a pearl of 7.33mm, accented on each side by an old cut diamond, the diamonds totalling 0.6-0.7 carats, stamped PLATINUM 18CT, size K1/2 / 5.5, 2.5g. 

Estimate £400 - £600

A RUBY FULL ETERNITY RING set all around with a row of square step cut rubies, the sides with engraved detailing, no assay marks, size L / 5.75, 2.1g. 

Estimate £700 - £900

A SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of approximately 5.00 carats within a double cluster of round brilliant cut diamonds, further diamonds set to the bifurcated band, the diamonds totalling 1.8-2.0 carats, stamped 14K, s

Estimate £1,200 - £1,600

AN ANTIQUE PEARL AND DIAMOND RING, EARLY 20TH CENTURY the rectangular face set with three pearls, in a border of old cut diamonds all totalling 0.9-1.0 carat, no assay marks, size M1/2 / 6.5, 6.4g. 

Estimate £1,000 - £1,500

AN ANTIQUE DIAMOND SNAKE RING in 18ct yellow gold, designed as a coiled snake, the head set with a graduating row of old European cut diamonds, stamped 18CT, size W / 11, 7.6g. 

Estimate £800 - £1,200

A SHELL CAMEO RING set with an oval shell cameo carved to depict the bust of a lady, marked indistinctly, size U1/2 / 10.25, 9.3g. 

Estimate £300 - £500

AN ANTIQUE GEORGIAN PORTRAIT MINIATURE RING in yellow gold, set with a Georgian portrait miniature of a gentleman, on seven rows of trace chain, no assay marks, size V / 10.5, 10.4g. 

Estimate £800 - £1,200

A GARNET INTAGLIO RING set with an oval garnet intaglio carved to depict a family crest, no assay marks, size I / 4.25, 4.0g. 

Estimate £800 - £1,200

AN ANTIQUE VICTORIAN DIAMOND AND ENAMEL MOURNING BAND RING in yellow gold, set with three old cut diamonds, accented by black enamel, inscribed G. Young Oct 2 April 1873, no assay marks, size T / 9.5, 4.3g. 

Estimate £400 - £600

AN ANTIQUE SYNTHETIC SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire in a cluster of rose cut diamonds, stamped 18CT, size N / 6.75, 5.6g. 

Estimate £400 - £600

AN OPAL AND DIAMOND FIVE STONE RING in 18ct yellow gold, set with five graduating oval cabochon opals, accented by rose cut diamonds, one diamond missing, full British hallmarks for London 1970, size O / 7.25, 5.1g. 

Estimate £400 - £600

AN ANTIQUE RUBY AND DIAMOND RING in yellow gold, set with two oval cut rubies, accented by trios of old cut diamonds, marked indistinctly, size O / 7.25, 3.7g. 

Estimate £800 - £1,200

A SAPPHIRE FIVE STONE RING set with five cushion cut sapphires all totalling 2.3-2.5 carats, no assay marks, size O1/2 / 7.5, 4.0g. 

Estimate £800 - £1,200

A DIAMOND AND EMERALD BOMBE RING set with an old European cut diamond of approximately 0.88 carats within a border of calibre cut emeralds, the pierced bombe mount set with round cut diamonds, inscribed D0.88 0.34 0.34, stamped PLAT, size N / 6.75, 8

Estimate £2,000 - £3,000

HARLE PARIS, A TOURMALINE AND DIAMOND MAXIMALIST RING in 18ct white gold, set with an oval cut green tourmaline and a pear cut pink tourmaline, accented by a pear cut brown and white diamond, inscribed 6.79ct  D0.67ct, HP maker's mark, partial Britis

Estimate £2,500 - £3,500

A FINE SAPPHIRE INTAGLIO SIGNET RING set with a cushion cut sapphire of approximately 3.95 carats, the intaglio carved with a family crest, stamped 750, size Q1/2 / 8.5, 12.7g. 

Estimate £5,000 - £7,000

A COLOMBIAN MINOR EMERALD AND DIAMOND THREE STONE DIAMOND RING set with an octagonal step cut emerald of 1.32 carats accented on each side by a round brilliant cut diamond, the diamonds totalling 0.8-0.9 carats, no assay marks, size M / 6.25, 3.1g. A

Estimate £5,000 - £7,000

A DIAMOND ILLUSION DRESS RING set with three clusters of round brilliant and baguette cut diamonds, stamped 750, size N / 6.75, 5.0g. 

Estimate £1,200 - £1,600

AN OPAL RING set with an oval cabochon opal, stamped 375, size M1/2 / 6.5, 2.1g. 

Estimate £300 - £500

A SAPPHIRE AND DIAMOND THREE STONE RING in 18ct yellow gold, set with an octagonal step cut sapphire of approximately 2.35 carats, accented on each side by a round brilliant cut diamond, the diamonds totalling 0.8-1.0 carat, full British hallmarks fo

Estimate £3,000 - £5,000

AN AQUAMARINE AND DIAMOND RING set with an octagonal step cut aquamarine, the pierced shoulders set with round brilliant cut diamonds, no assay marks, size N1/2 / 7, 2.5g. 

Estimate £700 - £900

A DIOPSIDE AND DIAMOND NAVETTE RING in 18ct yellow and white gold, the navette face set with an oval cut green diopside, accented by round brilliant cut diamonds, full British hallmarks, size L / 5.75, 4.7g. 

Estimate £500 - £700

A MODERNIST BLUE TOPAZ AND DIAMOND DRESS RING in yellow gold, the abstract band set with oval and round cut blue topaz and round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 8.9g. 

Estimate £1,500 - £2,500

AN ANTIQUE SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of approximately 1.48 carats in a cluster of old cut diamonds, the shoulders set with rose cut diamonds, no assay marks, size I / 4.25, 2.5g. 

Estimate £1,500 - £2,500

A THREE STONE RUBY RING set with three oval cut rubies totalling 1.9-2.1 carats, no assay marks, size N1/2 / 7, 3.0g. 

Estimate £600 - £800

A SOLITAIRE DIAMOND RING set with a marquise cut diamond of approximately 3.68 carats, ALJ maker's mark, no assay marks, size O / 7.25, 5.7g. 

Estimate £10,000 - £15,000

AN EMERALD AND DIAMOND DRESS RING set with an octagonal step cut emerald of approximately 1.73 carats within concentric borders of round cut diamonds, the pierced shoulders set with single cut diamonds, no assay marks, size L1/2 / 6, 6.7g. 

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND DRESS RING set with an oval cut sapphire of approximately 1.71 carats, accented by round brilliant and baguette cut diamonds, stamped 750, size O / 7.25, 3.2g. 

Estimate £1,200 - £1,600

A SAPPHIRE AND DIAMOND NAVETTE RING the navette face set with an oval cut sapphire of approximately 1.90 carats, accented by old European and transitional cut diamonds, stamped AT (partially obscured mark for platinum), size M1/2 / 6.5, 5.6g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND THREE STONE RING set with an oval cut ruby of approximately 0.95 carats between two old cut diamonds, the diamonds totalling 0.6-0.7 carats, no assay marks, size Q / 8.25, 3.0g. 

Estimate £600 - £800

AN EMERALD AND DIAMOND CLUSTER RING set with an octagonal step cut emerald of approximately 1.06 carats in a cluster of round brilliant cut diamonds, further diamonds set to the shoulders, the diamonds totalling 0.5-0.6 carats, stamped 18CT, size O1/

Estimate £1,500 - £2,500