A DIAMOND AND SAPPHIRE RING set with an old cut diamond of 2.22 carats in a border of round brilliant cut diamonds, accented by French cut sapphires, stamped 18K, size M1/2 / 6.5, 5.7g. 

Estimate £6,000 - £8,000

A DIAMOND HALF ETERNITY RING half set with a row of old cut diamonds, the diamonds all totalling 1.3-1.5 carats, stamped 18CT, size Q / 8.25, 7.1g. 

Estimate £800 - £1,200

A FANCY YELLOW INTERNALLY FLAWLESS SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a cushion cut fancy yellow diamond of 0.61 carats, the band set with round brilliant cut diamonds, partial British hallmarks, stamped 750, size L / 5.75, 2.4g. Ac

Estimate £1,000 - £1,500

CARTIER, AN EMERALD AND ONYX PANTHERE RING in 18ct yellow gold, designed as a coiled panther, the eyes set with round cut emeralds, the nose set with polished onyx, signed Cartier London, full British hallmarks for London 1990, size I1/2 / 4.5, 12.3g

Estimate £2,000 - £3,000

A RUBY AND DIAMOND RING set with three rows of square step cut rubies accented by pave set round brilliant cut diamonds, inscribed D0.50 R4.20, stamped 18KT, size N / 6.75, 11.7g. 

Estimate £1,000 - £1,500

A DIAMOND HALF ETERNITY RING set with a row of baguette cut diamonds between two rows of round brilliant cut diamonds, the diamonds all totalling 2.13 carats, stamped 750, size N / 6.75, 4.4g. 

Estimate £2,000 - £3,000

CARTIER, A SAPPHIRE AND DIAMOND RING the open band set at each end with with round brilliant cut diamonds, accented by round cabochon sapphires, signed Cartier and numbered, stamped Au750, size S / 9.25, 4.7g. 

Estimate £1,200 - £1,600

BOODLES, A D COLOUR SOLITAIRE DIAMOND RING in platinum, set with a radiant cut diamond of 1.01 carats, signed Boodles, full British hallmarks, size J1/2 / 5, 4.0g. Accompanied by a Boodles ring box and a facsimile GIA report stating that the diamond

Estimate £4,000 - £6,000

A PINK TOURMALINE AND DIAMOND CLUSTER RING set with a cushion cut pink tourmaline of approximately 6.71 carats in a cluster of round brilliant cut diamonds, no assay marks, size N / 6.75, 9.3g. 

Estimate £1,000 - £1,500

A RUBY AND DIAMOND BOMBE RING the bombe face set with round cut rubies and round brilliant cut diamonds, stamped 750, size P1/2 / 8, 17.0g. 

Estimate £1,000 - £1,500

AN AMETHYST AND DIAMOND RING set with a sugarloaf cabochon amethyst in a border of round cut diamonds, stamped 14K, size L / 5.75, 7.4g. 

Estimate £600 - £800

A DIAMOND NAVETTE RING set with a cluster of round brilliant cut diamonds, the diamonds all totalling 2.2-2.4 carats, no assay marks, size J1/2 / 5, 4.4g.

Estimate £1,500 - £2,500

A COLOMBIAN EMERALD AND DIAMOND THREE STONE RING set with an oval cabochon emerald of 9.42 carats, accented on each side by a trillion cut diamond of 1.00 carat and 1.09 carats respectively, stamped PLAT, size L / 5.75, 9.7g. Accompanied by three GIA

Estimate £10,000 - £15,000

A DIAMOND RING set with a rose cut diamond in a border of single cut diamond, the shoulders set with trios of further single cut diamonds, stamped 800 750, size N / 6.75, 4.6g.

Estimate £1,000 - £1,500

AN ANTIQUE PEARL AND DIAMOND NAVETTE RING the navette shaped ring set with a pearl of 6.4mm accented by old cut diamonds, the diamonds all totalling 1.5-2.0 carats, no assay marks, size K1/2 / 5.5, 4.5g. 

Estimate £2,500 - £3,500

AN ANTIQUE DIAMOND AND PEARL RING the pierced hexagonal face set with old and single cut diamonds and seed pearls, no assay marks, size L / 5.75, 4.2g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire in a cluster of round cut diamonds, full British hallmarks for London 1981, size U1/2 / 10.5, 4.5g. 

Estimate £150 - £250

A SAPPHIRE AND DIAMOND TARGET RING set with an old cut diamond of 0.55 carats in a border of French cut sapphires, the shoulders set with further diamonds, stamped 18K, size N / 6.75, 2.7g. 

Estimate £800 - £1,200

HARRY WINSTON, A DIAMOND FULL ETERNITY RING in platinum, set all around with a row of baguette cut diamonds, HW maker's mark and numbered, partial British hallmarks, size I1/2 / 4.5, 3.6g. Accompanied by a Harry Winston certificate of authenticity. 

Estimate £1,500 - £2,500

A TANZANITE AND DIAMOND CLUSTER RING set with an oval cut tanzanite of approximately 3.95 carats in a cluster of oval-shaped brilliant cut diamonds, stamped 750, size M1/2 / 6.5, 8.2g. 

Estimate £2,500 - £3,500

A DIAMOND NAVETTE RING the navette face set with a cluster of round brilliant cut diamonds, the diamonds all totalling 7.5-8.0 carats, stamped 750, size N / 6.75, 8.6g. 

Estimate £8,000 - £12,000

A ZAMBIAN EMERALD AND DIAMOND BALLERINA RING set with an octagonal step cut emerald of approximately 5.55 carats, in a border of round brilliant, tapered baguette and carre cut diamonds, inscribed D0.85, stamped Pt900, size K / 5.25, 14.0g. Accompani

Estimate £6,000 - £8,000

A DIAMOND HALO ENGAGEMENT RING set with a pear cut diamond of 1.16 carats in a border of round brilliant cut diamonds, the band accented by further diamonds, inscribed 1/1.16, stamped 18K, size M1/2 / 6.5, 3.9g. 

Estimate £1,500 - £2,500

A DIAMOND AND RUBY LION RING designed as a coiled lion set with round cut diamonds, the eyes set with round cut rubies, no assay marks, size P / 7.75, 7.3g. 

Estimate £800 - £1,200

AN ORANGE SAPPHIRE CLUSTER RING set with an oval cut orange sapphire of approximately 1.15 carats, in a cluster of round brilliant cut diamonds, stamped 18K, size L1/2 / 6, 4.4g. 

Estimate £600 - £800

NO RESERVE - A TYPE A JADEITE JADE AND DIAMOND RING set with an oval cabochon jadeite jade, accented on each side by trios of round cut diamonds, stamped Au750, size O1/2 / 7.5, 3.4g. Accompanied by a gemmological report stating that the jadeite jade

Estimate £400 - £600

A 2.90 CARAT SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of 2.90 carats, no assay marks, size L / 5.75, 3.5g. Accompanied by a gemmological report stating the diamond is L-M colour and VVS clarity. 

Estimate £6,000 - £8,000

BOODLES, A DIAMOND TULIP RING in 18ct white and rose gold, designed as a tulip pave set with round brilliant cut diamonds, the band accented by further round brilliant cut diamonds, B&D maker's mark, full British hallmarks, size N1/2 / 7, 7.8g. Accom

Estimate £1,200 - £1,600

A COLOMBIAN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of approximately 5.40 carats accented by round brilliant cut diamonds, stamped 750, size R / 8.75, 11.0g. Accompanied by a gemmological report stating the emerald is of Colom

Estimate £4,000 - £6,000

AN AQUAMARINE AND DIAMOND RING set with a cushion cut aquamarine of 12.95 carats, the shoulders set with round brilliant cut diamonds, the diamonds all totalling approximately 0.57 carats, stamped 750, size N / 6.75, 9.0g. 

Estimate £2,000 - £3,000

NO RESERVE - A KYANITE AND WHITE SAPPHIRE RING in 9ct white gold, set with an oval cut kyanite of approximately 2.28 carats, the shoulders set with round cut white sapphires, partial British hallmarks, size O / 7.25, 2.2g. 

Estimate £200 - £300

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

CARTIER, A LOVE RING in 18ct yellow gold, the gold band punctuated by six screw head motifs, signed Cartier and numbered, Swiss assay marks, stamped 750, size W / 11.5, 8.9g. Accompanied by a Cartier jewellery pouch. Current retail price: £1,860.

Estimate £800 - £1,200

A DIAMOND RING comprising two rows of round brilliant cut diamonds, the diamonds totalling 1.2-1.4 carats, no assay marks, size I1/2 / 4.5, 6.4g. 

Estimate £1,000 - £1,500

A DIAMOND THREE STONE RING set with three round brilliant cut diamonds all totalling 3.53 carats, inscribed 1/1.53 2/2.00, stamped 18K, size R / 8.5, 6.1g. 

Estimate £5,000 - £7,000

VAN CLEEF & ARPELS, A DIAMOND LOTUS BETWEEN THE FINGER RING the articulated double ring comprising a lotus flower and two leaves pave set throughout with round brilliant cut diamonds, the diamonds all totalling 2.1-2.2 carats, signed VCA and numbered

Estimate £8,000 - £12,000

A YELLOW AND WHITE DIAMOND CLUSTER RING / PENDANT set with a cushion cut yellow diamond of 1.09 carats, in a cluster of yellow and white diamonds with further diamonds accenting the band, the diamonds all totalling 2.25 carats, ring face detachable f

Estimate £4,000 - £6,000

DE BEERS, A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of 0.75 carats, the shoulders set with further round brilliant cut diamonds, set to the inside with a further round brilliant cut diamond, signed De Beers and numb

Estimate £2,000 - £3,000

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 DIAMOND BALLERINA RING set with a round brilliant cut diamond of approximately 1.28 carats in an undulating border of tapered baguette cut diamonds, no assay marks, size O / 7.25, 4.3g. 

Estimate £4,000 - £6,000

AN AQUAMARINE AND DIAMOND RING set with an octagonal step cut aquamarine of 5.03 carats, the shoulders set with round brilliant cut diamonds, the diamonds all totalling 0.44 carats, stamped 750, size N1/2 / 7, 6.5g.

Estimate £1,500 - £2,500

A RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with a round brilliant cut diamond of approximately 0.35 carats, in a cluster of round cut rubies and round brilliant and single cut diamonds, full British hallmarks for London 1976, size L / 5.

Estimate £1,000 - £1,500

A PAIR OF SAPPHIRE AND DIAMOND CLUSTER EARRINGS each set with an oval cut sapphire in a cluster of round brilliant and tapered baguette cut diamonds, the sapphires both totalling 4.28 carats, stamped 750, 1.3cm, 5.7g. 

Estimate £3,000 - £5,000

A DIAMOND AND SAPPHIRE TARGET RING set with an old European cut diamond of 3.49 carats in a border of French cut sapphires, the band accented by round brilliant cut diamonds, stamped 18K, size M1/2 / 6.5, 4.9g. 

Estimate £12,000 - £16,000

A FRENCH ART DECO SAPPHIRE AND DIAMOND RING in platinum, set with an oval cut sapphire of approximately 0.80 carats and two old cut diamonds totalling approximately 1.00 carats, accented by rose cut diamonds, French assay marks, size M1/2 / 6.5, 5.2g

Estimate £2,000 - £3,000

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 £12,000 - £16,000

AN EMERALD AND DIAMOND DRESS RING set with an oval cabochon emerald in a border of round brilliant cut diamonds, stamped 750, size M / 6.25, 13.7g. 

Estimate £2,500 - £3,500

AN UNHEATED RUBY AND DIAMOND RING set with a cushion cut ruby of 1.87 carats, accented by round brilliant and carre cut diamonds, the diamonds totalling 1.90 carats, stamped 750, size M / 6.25, 7.4g. Accompanied by a gemmological report stating the r

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 3.25 carats accented by round brilliant and baguette cut diamonds, the diamonds all totalling 0.7-0.8 carats, stamped 750, size N1/2 / 7, 4.3g. 

Estimate £2,000 - £3,000

A TANZANITE AND DIAMOND RING set with a cushion cut tanzanite of approximately 2.35 carats in a border of round brilliant cut diamonds, the band set with further round brilliant cut diamonds, stamped 750, size P / 7.75, 7.0g. 

Estimate £800 - £1,200

NO RESERVE - AN EMERALD AND DIAMOND RING set with an octagonal step cut emerald in a border of round brilliant cut diamonds, the stylised shoulders set with further diamonds, stamped 18K, size M1/2 / 6.5, 3.1g. 

Estimate £600 - £800

A FIRE OPAL AND DIAMOND DRESS RING in 18ct white gold, set with an oval cut fire opal of approximately 2.64 carats accented by round brilliant cut diamonds, partial British hallmarks, size L1/2 / 6, 8.3g. 

Estimate £1,000 - £1,500

AN ANTIQUE PEARL, RUBY AND DIAMOND RING set with a pearl of 6.3mm in a border of calibre cut rubies and old cut diamonds, no assay marks, size L / 5.75, 4.7g. 

Estimate £1,500 - £2,500

AN ANTIQUE DIAMOND NAVETTE RING the openwork navette face set with old and rose cut diamonds, no assay marks, size R1/2 / 9, 3.1g. 

Estimate £1,200 - £1,600

AN OPAL AND DIAMOND RING set with three oval cabochon opals accented by single cut diamonds, stamped 18CT, size M / 6.25, 6.8g. 

Estimate £350 - £550

A DIAMOND ETERNITY RING the openwork ring set with a row of marquise and single cut diamonds, accented by two rows of baguette and single cut diamonds, no assay marks, size M / 6.25, 6.7g. 

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND CLUSTER RING set with a round cut sapphire of approximately 2.93 carats in a cluster of round brilliant and baguette cut diamonds, the diamonds all totalling approximately 1.07 carats, stamped 750, size N1/2 / 7, 4.4g. 

Estimate £3,000 - £5,000

A TAHITIAN BLACK PEARL AND DIAMOND RING set with a black pearl of 13.2mm, the band set with marquise and round brilliant cut diamonds, stamped 18K, size N / 6.75, 7.3g. 

Estimate £600 - £800

NO RESERVE - A PARAIBA TOURMALINE AND DIAMOND RING set with an oval cut paraiba tourmaline of approximately 1.23 carats, accented by round brilliant and tapered baguette cut diamonds, stamped 9K, size N1/2 / 7, 3.5g. 

Estimate £200 - £300

AN EMERALD AND DIAMOND RING set with an oval cut emerald of approximately 2.07 carats, the shoulders set with round brilliant and baguette cut diamonds, stamped 18K, size M / 6.25, 4.3g. 

Estimate £1,500 - £2,500

A PINK SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut pink sapphire in a double cluster of round brilliant cut diamonds, no assay marks, size T1/2 / 10, 4.4g. 

Estimate £1,000 - £1,500

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING set with an old European cut diamond of approximately 0.40 carats, accented by rectangular step cut sapphires and single cut diamonds, no assay marks, size N / 6.75, 5.9g. 

Estimate £2,500 - £3,500

A COLOMBIAN EMERALD AND DIAMOND THREE STONE RING set with an octagonal step cut emerald of approximately 1.34 carats, accented on each side by a shield cut diamond, stamped PT950, size M / 6.25, 5.1g. Accompanied by a gemmological report stating the

Estimate £4,000 - £6,000

A BLUE AND WHITE DIAMOND RING set with a row of irradiated round cut blue diamonds in a border of white diamonds, stamped 750K, size K / 5.5, 6.9g. 

Estimate £350 - £550

AN AMETHYST RING set with an oval cabochon amethyst on a satin finish band, stamped 18K, size M1/2 / 6.5, 2.5g. 

Estimate £300 - £500

A RUBY AND DIAMOND DRESS RING the openwork ring set with three old cut diamonds, in a border of calibre cut rubies and single cut diamonds, stamped Pt, size M / 6.25, 6.0g. 

Estimate £2,500 - £3,500

A DIAMOND RING set with a 1.59 carat fancy cut diamond, surrounded by a cluster of round cut diamonds, stamped 14K, size N / 6.75, 2.6g. 

Estimate £450 - £650

A FIVE STONE DIAMOND RING set with a row of five old European cut diamonds, HS maker's mark, stamped 18K PLAT, size O / 7.25, 3.6g. 

Estimate £400 - £600

AN ART DECO SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of approximately 1.00 carats, in a cluster of transitional and baguette cut diamonds, stamped CT&PT, size M / 6.25, 3.5g. 

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND THREE STONE RING set with an octagonal step cut emerald of approximately 1.50 carats, accented on each side by a round brilliant cut diamond, the diamonds both totalling approximately 0.94 carats, stamped 750, size L1/2 / 6, 4.

Estimate £1,200 - £1,600

A WHITE AND YELLOW DIAMOND CLUSTER RING in 18ct white gold, set with a radiant cut diamond of approximately 1.78 carats in a double cluster of round brilliant cut yellow diamonds, the shoulders set with further round brilliant cut diamonds, full Brit

Estimate £5,000 - £7,000

AN AQUAMARINE AND DIAMOND RING set with an octagonal step cut aquamarine of approximately 3.10 carats, between two tapered baguette cut diamonds, stamped 750, size J / 4.75, 4.8g. 

Estimate £500 - £700

A RUBY AND DIAMOND RING set with an octagonal step cut ruby in a border of round brilliant cut diamonds, the bifurcated band set with further diamonds, stamped 14K, size M / 6.25, 2.7g. 

Estimate £600 - £800

NO RESERVE - A TANZANITE AND DIAMOND RING set with an oval cut tanzanite of approximately 5.62 carats, accented by round brilliant cut diamonds, stamped 14K, size N1/2 / 7, 6.1g. 

Estimate £300 - £500

A DIAMOND BOMBE RING the foliate style bombe ring set with round cut diamonds, marked indistinctly, size L / 5.75, 7.4g. 

Estimate £400 - £600

A DIAMOND HALF ETERNITY RING set with seven round brilliant cut diamonds all totalling 2.17 carats, inscribed 7/2.17ct, stamped 18K, size N / 6.75, 3.9g. 

Estimate £1,500 - £2,500

A DIAMOND DRESS RING the pear shaped face set with a cluster of round brilliant cut diamonds in a border of round cut diamonds, the shoulders set with baguette and round cut diamonds, stamped 14K, size N1/2 / 7, 5.2g. 

Estimate £500 - £700

A SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of approximately 1.12 carats between two baguette cut diamonds, stamped 750, size I / 4.25, 3.3g.

Estimate £250 - £350

A DIAMOND DRESS RING in scrolling design, set with round brilliant cut diamonds, stamped G18K, size S1/2 / 9.5, 10.3g.  

Estimate £1,000 - £1,500

A DIAMOND ETERNITY RING set all around with a row of alternating round brilliant and marquise cut diamonds, the diamonds all totalling 1.0-1.2 carats, no assay marks, size R / 8.75, 4.5g. 

Estimate £600 - £800

A DIAMOND DRESS RING in 9ct white gold, comprising undulating rows of baguette cut diamonds, accented by round brilliant cut diamonds, the diamonds all totalling approximately 1.00 carat, partial British hallmarks, size N1/2 / 7, 5.8g. 

Estimate £600 - £800

A BURMESE TYPE A LAVENDER JADEITE JADE AND DIAMOND RING set with a cabochon lavender jadeite jade of 35.48 carats in a border of round cut diamonds, stamped 750, size M1/2 / 6.5, 16.0g. Accompanied by gemmological report stating that the jadeite is t

Estimate £1,000 - £1,500

AN ART DECO DIAMOND RING set with old European and single cut diamonds, no assay marks, size K / 5.25, 2.8g. 

Estimate £1,200 - £1,600

A BLACK PEARL AND DIAMOND FLOWER RING set with a black pearl of 14.2cm, the petals set with tapered baguette cut diamonds, stamped 14K, size M1/2 / 6.5, 17.2g. 

Estimate £800 - £1,200