A PINK TOPAZ AND PEARL CLUSTER RING in 9ct yellow gold, set with an oval cut pink topaz of approximately 7.23 carats in a cluster of pearls, stamped 9CT, size P1/2 / 8, 8.5g. 

Estimate £400 - £600

AN IOLITE, AGATE AND DIAMOND RING in 18ct white gold, set with an octagonal step cut iolite of 1.73 carats accented by a border of polished white agate and round brilliant cut diamonds, inscribed S1.73 1.00ct d0.15ct, stamped Au750, size N / 6.75, 4.

Estimate £800 - £1,200

A TURQUOISE AND DIAMOND CLUSTER RING in white gold, set with an elongated oval cabochon turquoise in a cluster of round brilliant and pear cut diamonds, the diamonds all totalling 3.5-3.7 carats, no assay marks, size O1/2 / 7.5, 10.8g. 

Estimate £1,000 - £1,500

GUCCI, A DIAMOND ICON RING in 18ct yellow gold, the band with a row of alternating double G motifs and round brilliant cut diamonds, signed Gucci, stamped Au750, size J1/2 / 5, 4.5g. 

Estimate £500 - £700

AN ANTIQUE DIAMOND TOI ET MOI RING in 18ct yellow gold, set with two old European cut diamonds of approximately 0.42 and 0.40 carats respectively, the band set with rose cut diamonds, stamped 18CT, size Q / 8.25, 2.9g. 

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND RING set with a cushion cut sapphire of approximately 4.19 carats, flanked by two baguette cut diamonds, no assay marks, size M / 6.25, 4.0g. 

Estimate £4,000 - £6,000

CARRERA Y CARRERA, A PANTHER RING in 18ct yellow gold, the open band designed as two interlocking panthers, maker's mark, stamped 750, size L1/2 / 6, 6.5g. 

Estimate £800 - £1,200

TIFFANY & CO, A VANNERIE LATTICE RING in 18ct yellow gold, in a domed basket weave style, set with fourteen round brilliant cut diamonds, signed T&CO, stamped 750, size M / 6, 8.4g.

Estimate £1,000 - £1,500

GARRARD, A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an oval cut diamond of approximately 0.35 carats, signed Garrard, full British hallmarks, size M1/2 / 6.5, 6.6g.

Estimate £800 - £1,200

AN ANTIQUE SAPPHIRE AND DIAMOND SNAKE RING in yellow gold, designed as two coiled snakes, the heads set with a round cabochon sapphire and an old cut diamond of approximately 0.66 carats, the eyes set with rose cut diamonds, no assay marks, size Y /

Estimate £1,500 - £2,500

A PINK SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut pink sapphire of approximately 2.40 carats in a cluster of transitional cut diamonds, the diamonds all totalling 0.9-1.1 carats, no assay marks, size M1/2 / 6.5, 5.1g. 

Estimate £3,500 - £4,500

AN ART DECO PORTRAIT CUT DIAMOND LOCKET RING in platinum, set with a portrait cut diamond between two baguette cut diamonds, opening to reveal a locket compartment, stamped 100IRID.900PLAT, size L / 5.75, 4.3g. 

Estimate £8,000 - £12,000

A DIAMOND SNAKE RING in 18ct white gold, designed as a coiled snake accented by round brilliant cut diamonds, inscribed 0.40, stamped K18WG, size I1/2 / 4.5, 7.0g. 

Estimate £1,200 - £1,600

AN UNTREATED COLOMBIAN EMERALD AND DIAMOND CLUSTER RING in platinum, set with an octagonal step cut emerald of 1.15 carats in a cluster of round brilliant, marquise and carre cut diamonds, inscribed E1.15 1.01, stamped Pt900, size N / 6.75, 7.8g. Acc

Estimate £10,000 - £15,000

MESSIKA, A DIAMOND GATSBY RING in 18ct white gold, the openwork ring in a stylised floral design set throughout with round brilliant cut diamonds, the diamonds all totalling 1.32 carats, signed Messika, French assay marks, size M / 6.25, 7.1g. 

Estimate £400 - £600

A VINTAGE SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, in checkerboard design set with alternating round brilliant cut diamonds and round cut sapphires, full British hallmarks for London 1978, size N1/2 / 7, 8.1g. 

Estimate £600 - £800

A CEYLON NO HEAT SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an oval cut sapphire of 2.71 carats accented on each side by a half moon cut diamond, the diamonds both totalling 0.51 carats, inscribed 2.71 0.51, stamped Pt900, size L1/2

Estimate £5,000 - £7,000

A DIAMOND, PINK TOURMALINE AND TSAVORITE GARNET TOI ET MOI RING set with a round cut pink tourmaline and a round cut green tsavorite garnet, the band accented by round cut diamonds, no assay marks, size N1/2 / 7, 4.2g. 

Estimate £2,500 - £3,500

A DIAMOND BALLERINA RING in 14ct white gold, set with an oval cut diamond of approximately 0.96 carats in a cluster of round brilliant and tapered baguette cut diamonds, the diamonds all totalling 2.5-3.0 carats, stamped 14K, size L / 5.75, 6.3g. 

Estimate £4,000 - £6,000

BULGARI, A DIAMOND PARENTESI RING in 18ct yellow gold and steel, the open tubogas ring set with round brilliant cut diamonds, signed Bulgari, stamped GOLD AND STEEL, size L / 6, 8.9g. 

Estimate £1,200 - £1,600

AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with alternating round cut sapphires and rose cut diamonds in star motifs, full British hallmarks for Birmingham 1919, size O / 7.25, 3.0g. 

Estimate £200 - £300

A SYNTHETIC SAPPHIRE AND CUBIC ZIRCONIA CLUSTER RING in 18ct yellow gold, set with a cushion cut synthetic sapphire of approximately 17.87 carats in a cluster of round brilliant cut cubic zirconias, stamped 18K, size T / 9.75, 22.3g. 

Estimate £600 - £800

A DIAMOND CLUSTER RING in 18ct white gold, set with a cluster of round brilliant cut diamonds all totalling 1.05 carats, inscribed 1.05, full British hallmarks, size N / 6.75, 4.3g. 

Estimate £1,000 - £1,500

A FANCY BROWN DIAMOND DRESS RING in 18ct yellow gold, set with a marquise cut brown diamond of 1.56 carats, the shoulders pave set with round brilliant cut diamonds totalling 0.8-1.0 carats, stamped 18K, size K1/2 / 5.5, 8.3g. 

Estimate £3,000 - £5,000

A VINTAGE PEARL AND DIAMOND CLUSTER RING in 18ct white gold, set with a pearl of 6.3mm in a cluster of old cut diamonds, the diamonds all totalling 1.1-1.3 carats, stamped 18CT, size N1/2 / 7, 4.9g. 

Estimate £1,500 - £2,500

A DIAMOND DRESS RING in platinum, set with three round brilliant cut diamonds in borders of round brilliant cut diamonds, the band set with further diamonds, full British hallmarks, size N / 6.75, 3.7g. 

Estimate £1,000 - £1,500

AN ANTIQUE DIAMOND AND RUBY CLUSTER RING in yellow gold, set with an old cut diamond in a cluster of old cut diamonds, within a border of cushion cut rubies and further old cut diamonds, no assay marks, size K1/2 / 5.5, 4.0g. 

Estimate £2,000 - £3,000

A DIAMOND RING in 18ct yellow gold, set with round brilliant cut diamonds, partial British hallmarks, size M1/2 / 6.5, 5.6g. 

Estimate £300 - £500

AN EMERALD AND DIAMOND DRESS RING in 18ct white gold, set with an octagonal step cut emerald of 4.94 carats in a border of round brilliant cut diamonds, the shoulders set with further round brilliant cut diamonds, the diamonds all totalling 0.65 cara

Estimate £3,000 - £5,000

A DIAMOND HALF ETERNITY RING in platinum, set with a row of baguette cut diamonds all totalling 1.05 carats, full British hallmarks, size L1/2 / 6, 5.1g. 

Estimate £1,500 - £2,500

A WOOD AND DIAMOND DRESS RING in 18ct rose gold, formed of polished walnut wood accented by a swirling row of round brilliant cut diamonds, stamped 750, size N1/2 / 7, 10.7g. 

Estimate £200 - £300

A DIAMOND THREE STONE RING in platinum, set with three round brilliant cut diamonds, full British hallmarks, size L / 5.75, 4.9g. 

Estimate £800 - £1,200

AN ANTIQUE SAPPHIRE FIVE STONE RING in 18ct yellow gold, set with a row of graduated cushion cut sapphires all totalling 4.0-4.3 carats, stamped 18CT, size S / 9.25, 5.7g. 

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut sapphire of 1.12 carats in a cluster of round brilliant cut diamonds, further round brilliant cut diamonds set to the shoulders, inscribed 1.12 .68, stamped PT950, size L1/2 / 6, 6

Estimate £1,500 - £2,500

A DIAMOND DRESS RING in 18ct white gold, set with a round brilliant cut diamond in a border of round brilliant cut diamonds, the stylised band set with further diamonds, full British hallmarks, size L1/2 / 6, 2.0g. 

Estimate £600 - £800

A GOLDEN SOUTH SEA PEARL AND DIAMOND RING in 18ct white gold, set with a golden pearl of 13.5mm accented by a border of round brilliant cut diamonds, the shoulders set with clusters of further diamonds, stamped 750, size L / 5.75, 8.8g. 

Estimate £1,200 - £1,600

AN AQUAMARINE AND DIAMOND CLUSTER RING in 18ct white gold, set with a square step cut aquamarine of 3.45 carats in a cluster of round brilliant cut diamonds, the band set with further diamonds, inscribed S3.45 D0.24ct, stamped Au750, size N1/2 / 7, 4

Estimate £600 - £800

AN UNHEATED SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of approximately 3.20 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.5-1.7 carats, stamped 18K, size M / 6.25, 5.6g. Ac

Estimate £4,000 - £6,000

A PINK SAPPHIRE AND DIAMOND THREE STONE RING set with a cushion cut pink sapphire of 2.36 carats between two round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 3.0g. 

Estimate £2,500 - £3,500

A RUBY AND DIAMOND DRESS RING in platinum, set with an oval cut ruby accented by old and single cut diamonds and calibre cut rubies, the rubies totalling 1.17 carats, the diamonds totalling 0.56 carats, stamped PLAT, size N / 6.75, 6.6g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of 1.85 carats in a double border of round brilliant cut diamonds, single cut diamonds accenting the pierced shoulders, the diamonds all totalling 1.20 carats, marked indistinctly, si

Estimate £2,000 - £3,000

A DIAMOND HALF ETERNITY RING in platinum, set with a row of round brilliant cut diamonds accented by a beaded border, full British hallmarks, size M / 6.25, 7.1g. 

Estimate £600 - £800

AN OPAL AND DIAMOND CLUSTER RING set with a cabochon opal in a cluster of round brilliant cut diamonds, the band set with further diamonds, the diamonds all totalling 1.5-1.7 carats, no assay marks, size M1/2 / 6, 6.7g.

Estimate £2,000 - £3,000

A PINK SAPPHIRE AND DIAMOND THREE STONE RING in 18ct white gold, set with an oval cut pink sapphire of 1.50 carats accented on each side by a round brilliant cut diamond, the diamonds totalling 1.35 carats, full British hallmarks, size N / 6.75, 5.7g

Estimate £1,200 - £1,600

A CORAL, ONYX AND EMERALD DRESS RING in 18ct yellow gold, set with a round cabochon coral in a border of polished onyx, accented by cabochon emeralds, stamped 18K, size J1/2 / 5, 15.7g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut ruby of 3.71 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.65 carats, stamped 18K, size N / 6.75, 6.0g. 

Estimate £2,000 - £3,000

A RUBY AND DIAMOND RING in yellow gold, set to the centre with an oval cut ruby of approximately 1.26 carats, the band accented by baguette and single cut diamonds, no assay marks, size M / 6, 8.0g.

Estimate £800 - £1,200

A RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut ruby of 3.34 carats in a cluster of round brilliant cut diamonds, the shoulders set with further round brilliant cut diamonds, the diamonds all totalling 1.97 carats, stamped 18

Estimate £3,000 - £5,000

A DIAMOND TOI ET MOI RING in platinum, set with two pear cut diamonds in a crossover design, the diamonds both totalling 0.80 carats, full British hallmarks, size M1/2 / 6.5, 5.1g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of 1.48 carats in a cluster of round brilliant cut diamonds, inscribed 1.48 0.53, full British hallmarks, size N / 6.75, 5.3g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of 5.73 carats in a cluster of round brilliant cut diamonds, the shoulders set with further round brilliant cut diamonds, the diamonds all totalling 1.91 carats, st

Estimate £4,500 - £5,500

AN EMERALD AND DIAMOND THREE STONE RING in platinum, set with an octagonal step cut emerald of 1.00 carats accented on each side by tapered baguette cut diamond, inscribed 1.00, full British hallmarks, size M1/2 / 6.5, 4.9g. 

Estimate £2,000 - £3,000

AN ART DECO RUBY AND DIAMOND RING designed as a belt set with baguette and single cut diamonds, accented by a row of square step cut rubies, no assay marks, size R / 8.75, 7.7g. 

Estimate £2,500 - £3,500

A DIAMOND SNAKE RING in 18ct yellow and rose gold and platinum, designed as three coiled snakes each set to the head with a round brilliant cut diamond, stamped PT900 18K, size P / 7.75, 8.5g. 

Estimate £800 - £1,200

AN ART DECO SAPPHIRE AND DIAMOND CLUSTER RING set with an old cut diamond of 1.54 carats within a pierced border set with old cut diamonds and step cut sapphires, rubbed French assay marks, size Q / 8, 4.4g.

Estimate £5,000 - £7,000

AN ANTIQUE STAR SAPPHIRE RING in yellow gold, set with a round cabochon star sapphire, no assay marks, size L1/2 / 6, 8.6g. 

Estimate £2,000 - £3,000

A NEPHRITE JADE RING in 9ct yellow gold, set with an oval cabochon nephrite on a bifurcated band, partial British hallmarks, size R / 8.75, 3.0g. 

Estimate £100 - £150

AN ANTIQUE RUSSIAN SAPPHIRE AND DIAMOND RING in 56 zolotnik gold, set with a cushion cut sapphire between two old cut diamonds, in a scrolling setting set with further diamonds, Russian assay marks, size M1/2 / 6.5, 4.0g. 

Estimate £1,000 - £1,500

A MULTICOLOUR SAPPHIRE CLUSTER RING in yellow gold, set with a cluster of cushion, round and oval cut blue, yellow, pink and purple sapphires, the sapphires all totalling 8.4-8.7 carats, no assay marks, size M / 6.25, 9.0g. 

Estimate £2,000 - £3,000

CARTIER, A DIAMOND TRINITY RING in 18ct yellow, white and rose gold, comprising three interlocking rings each set with a row of round brilliant cut diamonds, signed Cartier and numbered, French assay marks, stamped 750, size H1/2 / 4, 8.1g. 

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND HALF ETERNITY RING set with a row of alternating round cut sapphires and round brilliant cut diamonds, no assay marks, size N1/2 / 7, 3.9g. 

Estimate £600 - £800

A PAIR OF SAPPHIRE AND DIAMOND CLUSTER EARRINGS in 18ct yellow gold, each set with an oval cut sapphire in a cluster of round brilliant cut diamonds, the sapphires both totalling 2.4-2.6 carats, the diamonds all totalling 1.0-1.2 carats, stamped 750,

Estimate £1,500 - £2,500

VAN CLEEF & ARPELS, A VINTAGE SAPPHIRE AND DIAMOND RING in 18ct yellow gold and platinum, set with a cabochon sapphire of approximately 9.25 carats accented by a scrolling border set with round brilliant cut diamonds, the diamonds all totalling 1.8-2

Estimate £12,000 - £18,000

A THREE STONE DIAMOND GYPSY RING in 18ct white gold, set with three old European cut diamonds, the diamonds all totalling 1.3-1.4 carats, French import marks for 18ct gold, size N / 6.75, 8.0g. 

Estimate £2,000 - £3,000

AN ANTIQUE DIAMOND CLUSTER RING in yellow gold and silver, set with a cluster of seven rose cut diamonds, no assay marks, size Q / 8.25, 6.5g. 

Estimate £1,500 - £2,500

A BURMA NO HEAT PINK SAPPHIRE AND DIAMOND THREE STONE RING set to the centre with an oval cut pink sapphire of approximately 1.50 carats between two round brilliant cut diamonds, no assay marks, size M / 6.25, 2.8g. 

Estimate £2,000 - £3,000

A RETRO DIAMOND RING in 18ct yellow and white gold, the bombe face set with old and rose cut diamonds, the diamonds all totalling 1.5-1.8 carats, stamped 750, size L / 5.75, 8.5g. 

Estimate £1,500 - £2,500

AN AQUAMARINE AND DIAMOND RING in 18ct white gold, set with an oval cut aquamarine of approximately 2.50 carats accented by round brilliant cut diamonds, stamped 18K 750, size L1/2 / 6, 4.3g. 

Estimate £500 - £700

A RUBY AND DIAMOND HALF ETERNITY RING set with a row of alternating round cut rubies and round brilliant cut diamonds, no assay marks, size N1/2 / 7, 4.0g. 

Estimate £600 - £800

A PEARL, RUBY AND DIAMOND TOI ET MOI RING set with a black and white pearl of 10.6mm and 10.1mm respectively, accented by rows of pear cut diamonds and pear cut rubies, the diamonds totalling 1.0-1.2 carats, the rubies totalling 1.2-1.4 carats, no as

Estimate £600 - £800

A PERIDOT AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a pear cut peridot of approximately 5.50 carats in a cluster of oval cut diamonds and round brilliant cut yellow diamonds, the diamonds all totalling 3.2-3.6 carats, full British hallma

Estimate £4,000 - £6,000

AN UNHEATED RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of 3.19 carats in a cluster of round brilliant cut diamonds, the band pave set with further round brilliant cut diamonds, inscribed 3.19 3.183, stamped K18, size

Estimate £12,000 - £16,000

A DIAMOND BAND DRESS RING in 18ct white gold, comprising three rows of round brilliant cut diamonds, the diamonds all totalling 0.8-1.0 carats, full British hallmarks, size L / 5.75, 10.1g. 

Estimate £600 - £800

A PINK SPINEL AND DIAMOND RING in 18ct white gold, set with an oval cut pink spinel of 1.65 carats in a border of round brilliant cut diamonds, the bifurcated band set with further diamonds, inscribed 1.65 0.25, stamped K18WG, size N1/2 / 7, 3.7g. 

Estimate £2,000 - £3,000

MESSIKA, A DIAMOND MOVE RING in 18ct white gold, the wide band set with three moveable round brilliant cut diamonds, inscribed D0.25, signed Messika, French assay marks, stamped 750, size M / 6.25, 11.7g. 

Estimate £400 - £600

A TURQUOISE AND DIAMOND DRESS RING in 18ct white gold, set with two pear shaped cabochon turquoise accented by pave set round brilliant cut yellow and white diamonds, stamped 750, size N / 6.75, 25.9g. 

Estimate £1,000 - £1,500

A DIAMOND DRESS RING in 18ct rose gold, designed as a swirl set with round brilliant cut diamonds, stamped 750, size N1/2 / 7, 9.5g. 

Estimate £600 - £800

A TANZANITE AND DIAMOND RING in 18ct white gold, set with an oval cut tanzanite of 5.35 carats in a double border of round brilliant cut diamonds, further round brilliant cut diamonds accenting the shoulders, the diamonds all totalling 0.99 carats, s

Estimate £2,000 - £3,000

A SOLITAIRE DIAMOND RING set with an old European cut diamond of approximately 1.02 carats, no assay marks, size M1/2 / 6.5, 2.3g. 

Estimate £2,500 - £3,500

MESSIKA, A DIAMOND PROMISE RING in 18ct white gold, of scrolling design set throughout with round brilliant cut diamonds, the diamonds all totalling 0.45 carats, signed Messika, French assay marks, size K1/2 / 5.5, 5.9g. 

Estimate £600 - £800

A DIAMOND DRESS RING in 18ct white gold, set with baguette cut diamonds in a cluster of round brilliant cut diamonds, the diamonds all totalling 0.50 carats, inscribed 0.5, full British hallmarks, size K1/2 / 5.5, 4.3g.

Estimate £300 - £500

A FRENCH RUBY AND DIAMOND DRESS RING in 18ct white gold, set with an oval cut ruby of approximately 1.85 carats accented on each side by a baguette cut diamond, the band pave set with round brilliant cut diamonds, French assay marks, size M / 6.25, 5

Estimate £1,500 - £2,500

TIFFANY & CO., AN ART DECO EMERALD AND DIAMOND DRESS RING in 18ct yellow gold, the rectangular face set to the centre with four rows of old European cut diamonds, in a border of rectangular step cut emeralds and single cut diamonds, the diamonds all

Estimate £5,000 - £7,000

MESSIKA, A DIAMOND LACE RING in 18ct white gold, the openwork ring set with marquise cut diamonds accented by rows of round brilliant cut diamonds, signed Messika, French assay marks, stamped 750, size M / 6.25, 8.1g. 

Estimate £300 - £500

A DIAMOND FIVE STONE RING in 18ct yellow gold, set to the centre with a round brilliant cut diamond of 0.70 carats between pairs of round brilliant cut diamonds all totalling 0.41 carats, inscribed 70, partial British hallmarks, size M1/2 / 6.5, 3.3g

Estimate £1,500 - £2,500

A FANCY COLOURED DIAMOND CLUSTER RING in 18ct white gold, set with a pear cut dark brown-greenish yellow diamond of 5.00 carats in a cluster of pear and round brilliant cut diamonds, the diamonds all totalling 8.0-8.5 carats, stamped 750, size L1/2 /

Estimate £12,000 - £16,000

A PINK SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut pink sapphire of approximately 1.42 carats in a border of pear shaped and round brilliant cut diamonds, the band set with further diamonds, no assay marks, size N / 6.75, 4.2g. 

Estimate £2,000 - £3,000

ZOBEL, A DIAMOND DRESS RING in 18ct white gold, the stylised tapering band set with a princess cut diamond and two rough yellow diamonds, accented by round brilliant cut brown and white diamonds, signed Zobel, stamped 750, size L / 5.75, 10.8g. 

Estimate £3,500 - £4,500

A BURMA NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut sapphire of 1.48 carats in a cluster of round brilliant cut diamonds all totalling 1.00 carat, inscribed 1.48 1.00, stamped Pt900, size M / 6.25, 8.5g. Accompanied by

Estimate £3,000 - £5,000

AN UNHEATED RUBY AND DIAMOND RING set with an oval cut ruby of 4.04 carats between two round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 3.5g. Accompanied by a gemmological report stating that the ruby is of Thai/Cambodian origin with no

Estimate £3,000 - £5,000

A THREE STONE DIAMOND RING in 18ct yellow gold, set with three round brilliant cut diamonds totalling 3.67 carats, partial British hallmarks, size L1/2 / 6, 5.8g. 

Estimate £6,000 - £8,000

A DIAMOND CLUSTER RING in 18ct yellow gold, set with a cluster of round brilliant cut diamonds, the diamonds all totalling 0.88 carats, H.W.T maker's mark, full British hallmarks, size K1/2 / 5.5, 4.5g. 

Estimate £600 - £800

A SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an oval cut sapphire of 1.91 carats accented on each side by a round brilliant cut diamond, inscribed S1.91/D0.50, partial British hallmarks, size M1/2 / 6.5, 4.9g. 

Estimate £1,500 - £2,500

SACHI, A PINK DIAMOND DRESS RING in platinum and 18ct yellow gold, the oval face pave set with round brilliant cut pink diamonds in a border of round brilliant cut white diamonds, the stylised band accented by yellow gold twigs, inscribed 1.52, signe

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of 5.21 carats in a cluster of round brilliant cut diamonds, further round brilliant cut diamonds accenting the shoulders, stamped 750, size N1/2 / 7, 5.8g. Accompa

Estimate £6,000 - £8,000

A DIAMOND HALF ETERNITY RING in platinum, set with a row of round brilliant cut diamonds, partial British hallmarks, size M / 6.25, 3.0g. 

Estimate £300 - £500

AN EMERALD AND DIAMOND CLUSTER RING in 18ct white gold, set with an octagonal step cut emerald of 2.53 carats in a cluster of round brilliant cut diamonds, inscribed 2.53 .45, full British hallmarks, size M / 6.25, 4.3g. 

Estimate £1,500 - £2,500

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an old European cut diamond of 2.17 carats, full British hallmarks, size N1/2 / 7, 5.8g. 

Estimate £5,000 - £7,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND DRESS RING in platinum, set with a cushion cut sapphire of 13.03 carats in a cluster of round brilliant cut diamonds, the shoulders accented by baguette and single cut diamonds, the diamonds totalling 1.03 carats

Estimate £15,000 - £25,000

MAUBOUSSIN, AN AMETHYST AND DIAMOND MES COULEURS A TOI RING in 18ct white gold, set with a round cut amethyst of 12.95 carats accented by round brilliant cut diamonds, signed Mauboussin and numbered, stamped 750, size N1/2 / 7, 11.3g. 

Estimate £800 - £1,200

MESSIKA, A DIAMOND CLUSTER RING in 18ct white gold, set with seven round brilliant cut diamonds in clusters of further round brilliant cut diamonds, inscribed D0.45, signed Messika, stamped 750, size M / 6.25, 2.5g. 

Estimate £200 - £300

A DIAMOND RING in 18ct white gold, set with two rows of old cut diamonds, stamped 18CT, size N1/2 / 7, 5.9g. 

Estimate £400 - £600

A COLOMBIAN EMERALD AND DIAMOND RING in platinum, set with an octagonal step cut emerald of 1.02 carats in a cluster of round brilliant and baguette cut diamonds, the band set with further diamonds, inscribed E1.02 D0.97, stamped Pt900, size O / 7.25

Estimate £3,000 - £5,000

A DIAMOND RING set with an old European cut diamond of approximately 1.26 carats, the stepped shoulders set with baguette cut diamonds, no assay marks, size L1/2 / 6, 5.0g. 

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of approximately 2.70 carats in a cluster of round brilliant cut diamonds, further round brilliant cut diamonds accenting the shoulders, the diamonds all totalling

Estimate £1,500 - £2,500

A RUBY AND DIAMOND DRESS RING the openwork band set with a round cut ruby and single cut diamonds, accented by calibre cut rubies, the rubies totalling 1.00 carats, the diamonds totalling 0.85 carats, marked indistinctly, size M1/2 / 6.5, 5.4g. 

Estimate £1,000 - £1,500

AN EMERALD AND DIAMOND DRESS RING in platinum, set with curved rows of marquise cut emeralds and round brilliant cut diamonds, the emeralds all totalling 0.9-1.0 carats, full British hallmarks, size P / 7.75, 11.3g. 

Estimate £1,000 - £1,500

MESSIKA, A DIAMOND SCARAB RING in 18ct white gold, designed as a stylised scarab set throughout with round brilliant cut diamonds, the diamonds all totalling 1.05 carats, inscribed D1.05, signed Messika, stamped 750, size M / 6.25, 6.3g. 

Estimate £600 - £800

PERRIN, AN EMERALD AND DIAMOND RING in 18ct yellow gold, set with an oval cut emerald of approximately 1.85 carats accented by baguette cut diamonds, the band accented by rows of round brilliant cut diamonds, signed PERRIN, French assay marks, size N

Estimate £3,000 - £5,000

A RUBY AND DIAMOND THREE STONE RING in 18ct white gold, set with an oval cut ruby of approximately 3.64 carats accented on each side by a round brilliant cut diamond, full British hallmarks, size N / 6.75, 3.5g. 

Estimate £3,000 - £5,000

A CARBON AND DIAMOND RING comprising a band of carbon accented by a row of round brilliant cut diamonds, no assay marks, size L / 5.75, 1.5g. 

Estimate £200 - £300

AN EMERALD AND DIAMOND RING in platinum, set with an octagonal step cut emerald of 0.60 carats in a border of round brilliant and baguette cut diamonds, the band set with further diamonds, inscribed 0.603 D1.00, stamped Pt900, size L1/2 / 6, 4.8g. Ac

Estimate £2,000 - £3,000

AN EMERALD AND DIAMOND DRESS RING in 18ct white and yellow gold, set with an oval cut emerald in a stylised cluster of round brilliant cut yellow and white diamonds, stamped 750, size O / 7.25, 6.9g. 

Estimate £1,500 - £2,500