A 4.37 CARAT SOLITAIRE DIAMOND RING in platinum, set with an old cut diamond of 4.37 carats accented on each side by a baguette cut diamond, full British hallmarks, size Q1/2 / 8.5, 6.6g. 

Estimate £15,000 - £25,000

A COLOMBIAN EMERALD RING in 18ct yellow gold, set with a cabochon emerald of approximately 7.47 carats, stamped 750, size I1/2 / 4.5, 8.8g. With a gemmological verbal assessment stating the emerald is of Colombian origin.

Estimate £4,000 - £6,000

AN ANTIQUE 5.58 CARAT SOLITAIRE DIAMOND RING, CIRCA 1915 in platinum, set with an old cushion cut diamond of 5.58 carats, each shoulder set with a trio of single cut diamonds, maker's mark WG&S, stamped PLAT, size J1/2 / 5, 3.6g. 

Estimate £20,000 - £30,000

AN AQUAMARINE AND DIAMOND CLUSTER RING in 18ct white gold, set with an octagonal step cut aquamarine of approximately 5.72 carats, in a border of round brilliant cut and princess cut diamonds, stamped 750, size N / 6.75, 7.7g.

Estimate £1,000 - £1,500

A DIAMOND RIVIERE NECKLACE in 14ct white gold, set with a single row of graduating round brilliant cut diamonds all totalling 15.55 carats, stamped 77 / 15.55ct 14K, 46.0cm, 34.7g.

Estimate £10,000 - £15,000

A VINTAGE RUBY AND DIAMOND DRESS RING in 18ct yellow and white gold, in the manner of Buccellati, set with an oval cut ruby of approximately 0.46 carats, to an openwork band with pierced foliate designs, set with round cut diamonds, stamped 750, size

Estimate £1,000 - £1,500

RAYMOND YARD, A DIAMOND THREE STONE RING, CIRCA 1940 set with three old European cut diamonds to an openwork mount set with further old cut diamonds, the principal diamond of approximately 1.40 carats, the diamonds all totalling 2.5-3.0 carats, signe

Estimate £12,000 - £16,000

A SOLITAIRE DIAMOND RING in 18ct white gold, set with an old European cut diamond of 2.68 carats, stamped 750, L1/2 / 6, 3.4g.

Estimate £10,000 - £15,000

BOUCHERON, A DIAMOND CLUSTER RING in 18ct yellow gold, the stylised openwork design set with round brilliant cut diamonds, the diamonds all totalling 2.0-2.5 carats, signed Boucheron and numbered, French assay marks, size K1/2 / 5.5, 6.9g. 

Estimate £2,500 - £3,500

RENE BOIVIN, A DIAMOND BOMBE RING in 18ct yellow gold, set to the centre with an old European cut diamond of approximately 2.28 carats on a stylised dome set with round brilliant cut diamonds, maker's mark, French assay marks, size H1/2 / 4, 9.0g. 

Estimate £25,000 - £35,000

AN ANTIQUE DIAMOND AND PEARL TOI ET MOI RING in 14ct yellow gold and platinum, set with an old cut diamond of approximately 0.45 carats and a pearl, accented by rows of single cut diamonds, stamped 585, size L1/2 / 6, 3.5g. 

Estimate £1,000 - £1,500

A CORAL, ONYX AND DIAMOND DRESS RING set with a round polished coral bead and a round polished onyx bead to a surround of single cut diamonds, no assay marks, size M1/2 / 6.5, 3.5g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND DRESS RING set with a square step cut emerald of approximately 1.04 carats, accented by single cut diamonds, no assay marks, size N1/2 / 7, 5.8g. 

Estimate £2,000 - £3,000

A VINTAGE SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow and white gold, set with an octagonal mixed cut sapphire of approximately 4.90 carats in a border of old mine cut diamonds totalling 0.8-1.0 carat, full British hallmarks for London 1975, siz

Estimate £4,000 - £6,000

STEPHEN WEBSTER, A DIAMOND AND ENAMEL DRESS RING in 18ct white gold, the stylised geometric ring set with baguette and round brilliant cut diamonds, accented by black enamel, SW maker's mark, full British hallmarks, size O / 7.25, 12.1g. 

Estimate £3,000 - £5,000

AN ANTIQUE SAPPHIRE AND DIAMOND NAVETTE RING in 15ct yellow gold, set with a row of graduated round and cushion cut sapphires in a border of old cut diamonds, no assay marks, size M / 6.25, 3.6g. 

Estimate £1,200 - £1,600

A PERIDOT AND BLACK DIAMOND COCKTAIL RING in 18ct blacked gold, set with an oval cut peridot of approximately 7.50 carats accented by pave set round cut black diamonds, stamped 750, size P / 7.75, 8.8g. 

Estimate £2,500 - £3,500

A TURQUOISE AND DIAMOND DRESS RING in 18ct yellow gold, set with an oval cabochon turquoise, the shoulders accented by two rows of baguette cut diamonds, stamped 750, size P / 7.75, 16.1g. 

Estimate £2,000 - £3,000

A BURMA NO HEAT RUBY AND DIAMOND RING in 18ct white gold, set with a cushion cut ruby of 2.00 carats in a border of round brilliant cut diamonds, the bifurcated band set with further diamonds, partial British hallmarks, size L / 5.75, 4.7g. Accompani

Estimate £15,000 - £25,000

A DIAMOND DRESS RING in 18ct white gold, in a crossover design, set with round brilliant cut diamonds, stamped 750, size Q1/2 / 8.5, 9.5g. 

Estimate £500 - £700

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in 18ct white gold, set with a cushion cut sapphire of 7.98 carats accented by baguette cut diamonds, stamped 750, size M / 6, 4.3g. Accompanied by a gemmological report stating that the sapphire is of Ceylo

Estimate £8,000 - £12,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND THREE STONE RING in yellow gold, set with an oval cut sapphire of 1.56 carats between two old cut diamonds, no assay marks, size L1/2 / 6, 3.6g. Accompanied by a gemmological report stating that the sapphire is o

Estimate £1,000 - £1,500

AN ANTIQUE RUBY AND DIAMOND CHECKERBOARD RING in 18ct yellow gold, set with two rows of alternating round cut rubies and round cut diamonds, full British hallmarks for Birmingham 1900, size N / 6.75, 2.8g. 

Estimate £500 - £700

A YELLOW SAPPHIRE RING in 18ct yellow gold, set with a round cut yellow sapphire in a cut down setting, full British hallmarks, size R1/2 / 9, 6.5g. 

Estimate £1,500 - £2,500

AN ANTIQUE RUBY AND DIAMOND NAVETTE RING in 18ct yellow gold, set with an oval cut ruby of approximately 0.60 carats to a surround of old cut diamonds, no assay marks, size N1/2 / 7, 4.3g. 

Estimate £2,000 - £3,000

A DIAMOND AND PASTE RING in 18ct white gold, the geometric face set with a central old cut diamond of 0.60 carats accented by baguette cut green paste and single cut diamonds, stamped 750, size N / 6.5, 4.1g.

Estimate £800 - £1,200

A 4.01 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct yellow gold, set with a round brilliant cut diamond of 4.01 carats, the band accented by further round brilliant cut diamonds, partial British hallmarks, size M / 6.25, 7.1g. 

Estimate £25,000 - £35,000

A MORGANITE, PINK SAPPHIRE AND DIAMOND DRESS RING in 18ct rose gold, set with an oval cut morganite of 1.51 carats in a border of round cut pink topaz, the band accented by round brilliant cut diamonds, stamped 750, size N / 6.75, 4.4g. 

Estimate £1,000 - £1,500

A 3.71 CARAT SOLITAIRE DIAMOND RING in white gold, set with a pear cut diamond of 3.71 carats, partial British hallmarks, size L / 5.75, 5.7g. 

Estimate £10,000 - £15,000

A KUNZITE AND DIAMOND DRESS RING in 18ct white gold, set with a cushion cut kunzite of 15.58 carats in an openwork border set with round brilliant cut diamonds, stamped 18ct gold (750), size N1/2 / 7, 9.2g. Accompanied by a gemmological report statin

Estimate £3,000 - £5,000

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of approximately 2.10 carats in a border of round brilliant cut diamonds, the shoulders accented by tapered baguette cut diamonds, the diamonds totalling 0.8-1.0 ca

Estimate £1,500 - £2,500

A CABOCHON STAR SAPPHIRE RING in platinum, set with an oval cabochon star sapphire of 40.83 carats, stamped Pt, size M1/2 / 6.5, 18.7g. 

Estimate £15,000 - £25,000

A VINTAGE DIAMOND NAVETTE RING in yellow gold, the navette face set with old and rose cut diamonds all totalling 2.5-2.7 carats, no assay marks, size O / 7.25, 6.6g.

Estimate £1,500 - £2,500

A COLOMBIAN EMERALD AND DIAMOND THREE STONE RING in yellow gold, set with an octagonal step cut emerald of approximately 1.41 carats, accented by two round brilliant cut diamonds, the diamonds both totalling 0.9-1.0 carat, no assay marks, size M1/2 /

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with a round cut sapphire of 3.10 carats in a cluster of round brilliant cut diamonds, the band pave set with further round brilliant cut diamonds, stamped Pt950, size N1/2 / 7, 9.4g. 

Estimate £8,000 - £12,000

A PAIR OF FRENCH DIAMOND AND RUBY EARRINGS in 14ct yellow gold and silver, each set a round brilliant cut diamond in a border of calibre cut rubies and further round brilliant cut diamonds, screwback fittings, French assay marks, 1.3cm, 4.3g. 

Estimate £2,000 - £3,000

A FANCY PINK DIAMOND RING in 18ct rose gold and platinum, set with a round brilliant cut pink diamond of 0.81 carats in a concentric border or round brilliant cut pink and white diamonds, the band set with further diamonds, full British hallmarks, si

Estimate £3,000 - £5,000

A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 4.85 carats, marked indistinctly, size N / 7.5, 4.0g. 

Estimate £25,000 - £35,000

A DIAMOND DRESS RING in 18ct white gold, pave set with eleven rows of round brilliant cut diamonds, stamped 18K 750, size Q / 8.25, 24.5g. 

Estimate £2,000 - £3,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in 18ct white gold, set with a cushion cut sapphire of approximately 1.38 carats accented by a double border of round brilliant cut diamonds, further round brilliant cut diamonds to the band, stamped 750, si

Estimate £1,500 - £2,500

A RUBY ETERNITY RING in yellow gold, set all around with a row of rectangular step cut rubies, no assay marks, size L1/2 / 6, 2.2

Estimate £600 - £800

AN ART DECO STYLE PLAQUE RING in white gold, set with an old mine cut diamond of approximately 1.26 carats, to a stylised geometric plaque set throughout with rose cut diamonds, to diamond set shoulders, no assay marks, size Q / 8.25, 7.7g.

Estimate £3,500 - £4,500

AN ANTIQUE DIAMOND NAVETTE RING in rose gold, set with a cluster of old cut diamonds, the diamonds all totalling 2.0-2.5 carats, no assay marks, size N / 6.75, 4.7g. 

Estimate £2,500 - £3,500

A DIAMOND CLUSTER RING set with a rose cut diamond in a border of round cut diamonds, accented by further rose cut and round cut diamonds, no assay marks, size O / 7.25, 9.1g.

Estimate £1,500 - £2,500

AN ANTIQUE MOONSTONE AND DIAMOND SWEETHEART RING, 19TH CENTURY AND LATER in yellow gold and silver, set with a heart shaped cabochon moonstone in a border of rose cut diamonds surmounted by a bow set with further rose cut diamonds, later shank stampe

Estimate £2,500 - £3,500

AN ORANGE DIAMOND CLUSTER RING in 18ct white gold and platinum, set with a round brilliant cut orange diamond of 1.03 carats in a cluster of round brilliant cut diamonds, the band set with further diamonds, full British hallmarks, size L1/2 / 6, 4.8g

Estimate £2,000 - £3,000

AN AMETHYST AND DIAMOND COCKTAIL RING in 18ct white gold, set with an oval mixed cut amethyst of 84.02 carats, the mount in scrolling design set with round brilliant cut diamonds, the diamonds all totalling 2.52 carats, no assay marks, size S1/2 / 9.

Estimate £3,000 - £5,000

A COLOMBIAN EMERALD AND DIAMOND RING in 18ct white gold, set with an octagonal step cut emerald of 7.55 carats to a surround of baguette cut diamonds, stamped 750, size M / 6.25, 10.9g. Accompanied by a gemmological report stating that the emerald is

Estimate £20,000 - £30,000

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut sapphire of approximately 5.05 carats in a cluster of round brilliant cut diamonds, partial British hallmarks, size N1/2 / 7, 10.1g. 

Estimate £2,500 - £3,500

A BURMA NO HEAT RUBY AND DIAMOND DRESS RING in 18ct white gold, set with an octagonal mixed cut ruby of 1.93 carats to a stylised openwork band set with round brilliant cut diamonds, stamped 750, size N / 6.75, 13.7g. Accompanied by a gemmological re

Estimate £10,000 - £15,000

A 2.15 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 2.15 carats, partial British hallmarks, size K1/2 / 5.5, 4.1g. 

Estimate £5,000 - £7,000

A PINK DIAMOND AND DIAMOND RING / PENDANT in 18ct white gold, set with an emerald cut pink diamond of 0.90 carats in a border of round brilliant cut pink diamonds and marquise and round brilliant cut white diamonds, the white diamonds all totalling 3

Estimate £12,000 - £16,000

GRAFF, A FANCY INTENSE YELLOW DIAMOND RING set with a radiant cut yellow diamond of 1.00 carats accented on each side by a pear cut white diamond, the diamonds all totalling 1.63 carats, signed Graff, no assay marks, size M / 6.5, 7.7g. Accompanied b

Estimate £5,000 - £7,000

A VINTAGE EMERALD AND DIAMOND DRESS RING in white gold, set with square cut emerald of approximately 1.00 carats, between old cut diamonds flanked by further old cut diamonds, stamped 585, size O / 7.25, 8.4g.

Estimate £2,500 - £3,500

A TANZANITE AND DIAMOND RING in 18ct white gold, set with an oval cut tanzanite of 3.12 carats in an openwork border set with round brilliant cut diamonds, stamped 18ct gold (750), size N1/2 / 7, 5.4g. 

Estimate £2,500 - £3,500

A BLUE DIAMOND AND DIAMOND CLUSTER RING in platinum, set with an emerald cut blue diamond of approximately 3.02 carats in a border of round brilliant cut diamonds, partial British hallmarks, size N1/2 / 7, 8.1g. 

Estimate £15,000 - £25,000

A FANCY BROWN DIAMOND CLUSTER RING in 18ct white gold and platinum, set with a round brilliant cut fancy brown diamond of 1.12 carats, to a cluster of round brilliant cut diamonds and diamond set shoulders, full British hallmarks, size M1/2 / 6.5, 5.

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND CLUSTER RING set with a cluster of round brilliant cut diamonds in a border of round cut sapphires, no assay marks, size N / 6.75, 7.2g. 

Estimate £1,000 - £1,500

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with a pear cut sapphire of approximately 2.20 carats in a cluster of round brilliant cut diamonds, partial British hallmarks, size M / 6.25, 4.2g. 

Estimate £800 - £1,200

A RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut ruby of approximately 1.00 carats in a cluster of round brilliant cut diamonds, partial British hallmarks, size L / 5.75, 3.8g. 

Estimate £650 - £750

A MULTICOLOURED SAPPHIRE AND DIAMOND BUBBLE RING in 18ct yellow gold, set with round cut green, orange, blue, pink, yellow and purple sapphires, accented by round cut diamonds, partial British hallmarks, size O1/2 / 7.5, 7.1g. 

Estimate £1,000 - £1,500

AN UNHEATED SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an octagonal step cut sapphire of 4.69 carats to a surround of French cut diamonds, stamped 18K, size M / 6.25, 7.0g. Accompanied by a gemmological report stating that the sap

Estimate £6,000 - £8,000

AN EMERALD AND DIAMOND BOW RING in 18ct white gold, in bow design, set with a heart cut diamond of 0.90 carats and a heart cut emerald of 0.75 carats, accented by further diamonds and emeralds to the band, stamped 750, size M / 6.25, 3.8g.

Estimate £2,500 - £3,500

A 2.67 CARAT DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 2.67 carats, the trifurcated band accented by further round brilliant cut diamonds, full British hallmarks, size O / 7.25, 12.0g. 

Estimate £10,000 - £15,000

A BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with a pear cut ruby of 1.21 carats in a border of round cut diamonds, with further diamonds set to the shoulders, full British hallmarks, size N / 6.75, 2.8g. Accompanied by a gem

Estimate £2,500 - £3,500

A FANCY BLUE DIAMOND, PINK DIAMOND AND WHITE DIAMOND CLUSTER RING in platinum, set with a central radiant cut fancy light blue diamond of 0.49 carats to a surround of round brilliant cut pink diamonds and baguette cut white diamonds, in a crossover d

Estimate £12,000 - £16,000

A GARNET AND DIAMOND SWEETHEART RING in yellow gold, set with a pear shaped cabochon cut garnet to a surround of rose cut diamonds, the shoulders designed as two leaves, no assay marks, size N1/2 / 7, 2.5g.

Estimate £800 - £1,200

BOUCHERON, A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 0.35 carats, signed Boucheron, stamped 950 PT, size K1/2 / 5.5, 7.4g. 

Estimate £500 - £700

AN ANTIQUE SAPPHIRE AND DIAMOND DRESS RING the navette shaped face set with an oval cut sapphire of approximately 0.86 carats in a border of old cut diamonds, no assay marks, size N / 6.75, 2.1g. 

Estimate £3,000 - £5,000

AN UNHEATED ZAMBIAN EMERALD AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut emerald of 1.25 carats in a cluster of round brilliant cut diamonds, stamped 18ct, size N1/2 / 7, 4.1g. Accompanied by a gemmological report stating the eme

Estimate £1,200 - £1,600

A RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut ruby of approximately 1.00 carats in a cluster of round cut diamonds, with further diamonds to the band, stamped 750, size L / 5.75, 3.8g.

Estimate £650 - £750

A RUBY AND DIAMOND CROSSOVER RING in 18ct yellow gold, terminating in two pear cut rubies, accented by baguette cut diamonds, stamped K18, size K / 5, 4.6g.

Estimate £600 - £800

A DIAMOND RING in 18ct yellow gold, set with two rows of round brilliant cut diamonds all totalling 0.6-1.0 carats, partial British hallmarks, stamped 18K, size M / 6.25, 5.6g.

Estimate £600 - £800

AN ANTIQUE DIAMOND FIVE STONE RING in yellow gold, set with a row of five old cut diamonds. accented by rose cut diamonds, marked indistinctly, size N / 6.75, 5.3g. 

Estimate £2,500 - £3,500

A RUBY HALF ETERNITY RING in 18ct yellow gold, the band half set with a row of step cut rubies, stamped 750, size M / 6, 2.0g.

Estimate £250 - £350

A DIAMOND AND RUBY TARGET RING in 18ct white gold, set with a triangular shaped diamond of 2.11 carats in a concentric border of step cut rubies and round brilliant cut diamonds, stamped 750, size O / 7, 8.5g.

Estimate £4,000 - £6,000

A DIAMOND HALF ETERNITY RING in 18ct yellow gold, the band half set with round brilliant and baguette cut diamonds, full British hallmarks, size P / 7.75, 2.8g. 

Estimate £400 - £600

A YELLOW SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an oval cut yellow sapphire of approximately 1.70 carats accented by two round brilliant cut diamonds, stamped PLAT, size P / 7.75, 5.2g. 

Estimate £800 - £1,200

AN ANTIQUE DIAMOND RING in yellow gold, the navette face set with rose cut diamonds, marked indistinctly, size P / 7.5, 5.9g.

Estimate £1,000 - £1,500

A VINTAGE SYNTHETIC SAPPHIRE RING in 14ct yellow gold, in crossover design, set with round cut synthetic sapphires, stamped 585, size Q / 8, 15.2g.

Estimate £500 - £700

AN ANTIQUE YELLOW PASTE AND MARCASITE RING in yellow gold and silver, the navette face set with an oval cut yellow paste accented by rose cut marcasite, French assay marks, size N / 6.5, 5.0g.

Estimate £500 - £700

A COLOMBIAN EMERALD AND DIAMOND RING in 18ct yellow gold, set with an octagonal step cut emerald of approximately 5.40 carats accented by pairs of round brilliant cut diamonds, the diamonds all totalling 0.9-1.1 carat, stamped 750, size R / 8.5, 11.0

Estimate £6,000 - £8,000

A VINTAGE GOLD SIGNET RING in 9ct yellow gold, the ring face engraved with a pheasant, full British hallmarks, size S / 9.25, 8.0g. 

Estimate £300 - £500

BOUCHERON, A DIAMOND ETERNITY RING in 18ct yellow gold, set throughout with round brilliant cut diamonds, signed Boucheron and numbered, stamped 750, size J1/2 / 5, 5.0g. 

Estimate £1,200 - £1,600

A PINK SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut pink sapphire of approximately 1.51 carats in a cluster of round brilliant cut diamonds, stamped PLAT, size N / 6.75, 5.2g. 

Estimate £1,500 - £2,500

A CACHOLONG OPAL AND DIAMOND RING in 18ct yellow gold, set with a central piece of cacholong opal, carved to depict a rose within a border of round brilliant cut diamonds, stamped 18K, size O / 7.25, 20.3g.

Estimate £1,000 - £1,500

A DIAMOND BAND RING in 18ct rose gold, half pave set with round brilliant cut diamonds all totalling 1.8-2.2 carats, full British hallmarks, size O / 7.25, 6.1g.

Estimate £800 - £1,200

AN ORANGE SAPPHIRE ETERNITY RING in 18ct yellow gold, set all around with a row of octagonal step cut orange sapphires all totalling 4.0-4.4 carats, stamped 750, size N / 6.5, 2.8g.

Estimate £400 - £600

A FANCY INTENSE YELLOW DIAMOND AND WHITE DIAMOND CLUSTER RING in 18ct white and yellow gold, set with a cushion cut fancy intense yellow diamond of 0.76 carats in a border of round brilliant cut white diamonds, with further diamonds to the band, stam

Estimate £2,000 - £3,000

A DIAMOND ETERNITY RING in yellow gold, the flexible band set with a row of round brilliant cut diamonds all totalling 0.8-0.9 carats, no assay marks, size N / 6.5, 2.6g.

Estimate £500 - £700

A FANCY INTENSE YELLOW DIAMOND AND WHITE DIAMOND CLUSTER RING in 18ct white and yellow gold, set with a cushion cut fancy intense yellow diamond of 1.00 carats in a border of round brilliant cut white diamonds, with further diamonds to the band, stam

Estimate £3,000 - £5,000

AN EMERALD AND DIAMOND CLUSTER RING in white gold, set with an octagonal step cut emerald of 5.48 carats, in a border of round brilliant and princess cut diamonds, stamped 750, size M1/2 / 6.75, 6.9g. 

Estimate £2,000 - £3,000

AN AMETHYST AND DIAMOND COCKTAIL RING in white gold, set with an oval cut amethyst of 6.29 carats to stylised shoulders set with round brilliant and princess cut diamonds, stamped 750, size M1/2 / 6.75, 8.0g.

Estimate £800 - £1,200

AN AMETHYST AND DIAMOND COCKTAIL RING set with an octagonal step cut amethyst accented by fancy and baguette cut diamonds, no assay marks, size N / 6.5, 11.8g.

Estimate £1,000 - £1,500

AN AQUAMARINE AND DIAMOND RING in 18ct white gold, set with an octagonal step cut aquamarine of 8.71 carats in a double border of round brilliant cut diamonds, with further diamonds to the band, stamped 18ct gold (750), size N / 6.75, 4.9g. 

Estimate £4,000 - £6,000

A DIAMOND ETERNITY RING in white gold, the flexible band set with a row of round brilliant cut diamonds all totalling 0.9-1.1 carats, no assay marks, size M / 6, 2.5g.

Estimate £600 - £800

A CHAMPAGNE DIAMOND HALO RING in 18ct white gold, set with a round brilliant cut champagne diamond of approximately 2.01 carats in a border of round brilliant cut diamonds, stamped 750, size Q / 8, 6.8g. 

Estimate £4,000 - £6,000

AN AQUAMARINE AND DIAMOND RING in platinum, set with a cushion cut aquamarine of approximately 6.10 carats, the stepped shoulders set with round cut diamonds, stamped PLAT, size M / 6.25, 6.6g. 

Estimate £1,200 - £1,600

A FIVE STONE DIAMOND RING in white gold, set with five round brilliant cut diamonds all totalling 1.5-1.7 carats, stamped 750, size M1/2 / 6.75, 4.1g.

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND RING in white gold, set with an octagonal step cut emerald of 4.77 carats, between stepped shoulders set with round brilliant and emerald cut diamonds, stamped 750, size M1/2 / 6.75, 5.1g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of 0.76 carats within a border of round brilliant cut diamonds, accented by further diamonds to the band, stamped K18, size M / 6, 5.0g.

Estimate £600 - £800

A VINTAGE CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in platinum, set with an oval cut sapphire of 3.50 carats between an old and a round brilliant cut diamond, the diamonds both totalling 0.70 carats, stamped 950, size K / 5, 5.4g. Accompanied by a ve

Estimate £1,500 - £2,500

A SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct yellow gold, set with an old cut diamond of 1.42 carats, full British hallmarks, size L / 5.75, 2.8g. 

Estimate £4,000 - £6,000

A DIAMOND CLUSTER RING in white gold, set with a cluster of round brilliant cut diamonds all totalling 2.0-2.4 carats, stamped 14K, size O / 7.25, 5.1g.

Estimate £1,200 - £1,600

A PRASIOLITE, ONYX, GARNET AND DIAMOND COCKTAIL RING in 18ct rose gold, set with an oval fancy mixed cut prasiolite in a stylised mount set with cabochon onyx, round cut green and orange garnets and yellow sapphires, accented by round brilliant cut d

Estimate £2,000 - £3,000

A VINTAGE RUBY FIVE STONE RING in 22ct yellow gold, set with a row of five graduated step cut rubies all totalling 2.5-3.0 carats, stamped 22c, size R1/2 / 9, 4.0g.

Estimate £5,000 - £7,000

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut sapphire of 1.85 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 0.8-1.0 carats, stamped PLAT, size Q / 8.25, 4.9g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND BOMBE RING set with a central row of octagonal step cut emeralds, within a border of round brilliant and tapered baguette cut diamonds, no assay marks, size O / 7, 11.1g.

Estimate £3,000 - £5,000