VAN CLEEF & ARPELS, A RUBY DRESS RING, 1940S in platinum, set with a row of square step cut rubies, signed Van Cleef & Arpels and numbered, French import mark for platinum, size F / 2.75, 12.8g. 

Estimate £1,500 - £2,500

LES MUST DE CARTIER, A TRINITY RING in 18ct yellow, white and rose gold, comprising three interlocking bands, signed Les Must de Cartier, stamped 750, size D / 2, 5.9g. 

Estimate £300 - £500

A DIAMOND AND RUBY TARGET RING in platinum, set with a marquise cut diamond of 1.02 carats in a border of calibre cut rubies, inscribed 1.02, no assay marks, size M1/2 / 6.5, 2.6g. 

Estimate £3,500 - £4,500

A DIAMOND DRESS RING in yellow and white gold, the tapering band pave throughout with round brilliant cut diamonds, the diamonds all totalling 2.5-3.0 carats, accented by yellow gold beadwork, no assay marks, size H / 3.75, 8.4g. 

Estimate £2,000 - £3,000

A DIAMOND CLUSTER RING in platinum, set with an octagonal step cut diamond of approximately 1.10 carats within a cluster of old European cut diamonds, the band set with further diamonds, no assay marks, size L / 5.75, 5.4g.

Estimate £5,000 - £7,000

AN ANTIQUE DIAMOND DRESS RING in yellow gold, set with a row of three old cut diamonds, accented on each side by a further old cut diamond, the diamonds all totalling 1.7-1.9 carats, no assay marks, size O1/2 / 7.5, 4.7g. 

Estimate £1,500 - £2,500

AN OPAL AND DIAMOND CLUSTER RING in yellow gold, set with an oval cabochon opal in a cluster of round brilliant cut diamonds, no assay marks, size P / 7.75, 3.7g. 

Estimate £1,000 - £1,500

AN AQUAMARINE AND DIAMOND RING in platinum, set with an octagonal step cut aquamarine accented by round brilliant cut diamonds, stamped PLAT, size N / 6.75, 4.2g. 

Estimate £800 - £1,200

A MALACHITE AND DIAMOND RING in yellow gold, set with a piece of polished malachite in a border of round brilliant cut diamonds, on a twisted gold band, no assay marks, size M / 6.25, 7.0g. 

Estimate £400 - £600

A DIAMOND DRESS RING in 18ct white gold, the tapering band set with a row of princess cut diamonds accented by rows of baguette cut diamonds, the diamonds all totalling approximately 1.15 carats, full British hallmarks, size M / 6.25, 6.0g. 

Estimate £600 - £800

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of approximately 4.11 carats in a cluster of round brilliant cut diamonds all totalling 1.4-1.6 carats, stamped 18CT, size K1/2 / 5.5, 6.4g. 

Estimate £5,000 - £7,000

A THREE STONE DIAMOND RING in 18ct yellow gold, set with three round brilliant cut diamonds, the diamonds all totalling 0.50 carats, inscribed D0.50, full British hallmarks, size M1/2 / 6.5, 5.4g. 

Estimate £500 - £700

A GREEN PARAIBA TOURMALINE AND DIAMOND RING in 18ct yellow gold, set with an oval cut green Paraiba tourmaline of 8.53 carats to diamond set shoulders, partial British hallmarks, size N1/2 / 7, 11.3g.

Estimate £4,000 - £6,000

A GREEN TOURMALINE AND DIAMOND PENDANT in 18ct yellow gold, set with a rectangular step cut green tourmaline of 11.50 carats in a border of round brilliant cut diamonds, to a diamond set bail, partial British hallmarks, 2.9cm, 7.7g.

Estimate £1,500 - £2,500

A CORAL AND DIAMOND DRESS RING in 18ct yellow gold, designed as a stylised butterfly set with two round brilliant cut diamonds and heart shaped coral wings, full British hallmarks, size L1/2 / 6, 7.6g. 

Estimate £300 - £500

A SYNTHETIC STAR RUBY RING in yellow gold, set with a round cabochon synthetic star sapphire of approximately 13.45 carats, marked indistinctly, size N1/2 / 7, 5.5g. 

Estimate £600 - £800

A RETRO SYNTHETIC SPINEL AND DIAMOND RING in yellow gold, set with a rectangular step cut blue synthetic spinel accented by pairs of old cut diamonds, no assay marks, size P1/2 / 8, 9.9g. 

Estimate £400 - £600

A RUBY, AMETHYST AND DIAMOND RING in 18ct white gold, set with an oval cabochon ruby of 10.80 carats, set on each side with rectangular step cut amethysts, accented by round brilliant cut diamonds, inscribed 10.80ct 1.23ct d0.994ct, stamped Au750, si

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND CROSSOVER RING in platinum, set with a pear cut sapphire accented by round brilliant cut diamonds, stamped Pt900, size L1/2 / 6, 7.9g. 

Estimate £1,000 - £1,500

AN EMERALD AND SAPPHIRE THREE STONE RING in 18ct yellow gold, set with an octagonal step cut emerald of 0.83 carats, accented on each side by an oval cut light blue sapphire, inscribed E0.83ct 1.14ct, stamped Au750, size N1/2 / 7, 4.7g. 

Estimate £800 - £1,200

A RUBY AND DIAMOND DRESS RING in yellow gold, comprising twisted wirework accented by a single cut diamond and a cluster of round cut rubies, no assay marks, size P1/2 / 8, 11.8g. 

Estimate £800 - £1,200

A PURPLE SAPPHIRE AND DIAMOND THREE STONE RING in 18ct yellow gold, set with a round cut purple sapphire between two round brilliant cut diamonds, stamped 18K, size L1/2 / 6, 2.7g. 

Estimate £300 - £500

A DIAMOND HALF ETERNITY RING in platinum, comprising a row of channel set round brilliant cut diamonds all totalling 1.00 carat, inscribed 1.00, full British hallmarks, size I / 4.25, 6.6g.

Estimate £500 - £700

A STAR SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a cabochon star sapphire of 10.85 carats, the mount accented by round brilliant cut diamonds, inscribed S10.85 D0.55, stamped 18K, size L1/2 / 6, 5.3g. 

Estimate £1,500 - £2,500

A RUBY AND DIAMOND CLUSTER RING in platinum, set with an octagonal step cut ruby in a border of round brilliant cut diamonds, no assay marks, size N / 6.75, 3.2g. 

Estimate £1,500 - £2,500

A SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of 0.50 carats, maker's mark LJ, stamped 950, size H / 3.75, 3.8g. Accompanied by a gemmological report stating that the diamond is D colour and VS1 clarity.

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND TARGET RING in platinum, the square face set with a cluster of old cut diamonds in a border of calibre cut sapphires, inscribed 0.62, no assay marks, size N / 6.75, 5.0g. 

Estimate £2,000 - £3,000

AN ANTIQUE TURQUOISE AND DIAMOND CLUSTER RING in yellow gold, set with a cabochon oval turquoise in a cluster of old cut diamonds, no assay marks, size M1/2 / 6.5, 2.9g. 

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND RING in platinum, set with a cushion cut sapphire of approximately 2.30 carats in an openwork surround set with old cut diamonds, no assay marks, size Q / 8.25, 4.7g. 

Estimate £2,500 - £3,500

AN ANTIQUE ART DECO PEARL AND DIAMOND RING in platinum, set with a pearl of 11.0mm, the shoulders set with rose and single cut diamonds, no assay marks, size O / 7.25, 4.5g. 

Estimate £800 - £1,200

A DIAMOND CLUSTER RING in yellow gold, set with a cluster of old cut diamonds, no assay marks, size R / 8.75, 5.6g. 

Estimate £800 - £1,200

A CARNELIAN INTAGLIO RING in 9ct yellow gold, set with a carnelian intaglio depicting a sailor with the motto 'IT GUIDES ME WELL', full British hallmarks, size V / 10.5, 14.5g. 

Estimate £500 - £700

A SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an octagonal step cut sapphire between two old European cut diamonds, the shoulders set with old cut diamonds, no assay marks, size K1/2 / 5.5, 3.6g. 

Estimate £2,000 - £3,000

AN ANTIQUE GREEN TOURMALINE AND PEARL CLUSTER RING in 18ct yellow gold, set with a round cut green tourmaline in a cluster of seed pearls, full British hallmarks for Birmingham 1914, size L1/2 / 6, 3.1g. 

Estimate £500 - £700

A CITRINE AND DIAMOND RING in 9ct white gold, set with an oval cut citrine of approximately 12.00 carats, to a diamond set collet, partial British hallmarks, size N / 6.75, 10.9g.

Estimate £800 - £1,200

A GREEN TOURMALINE AND DIAMOND DRESS RING in yellow gold, set with a rectangular step cut green tourmaline, the shoulders set with round brilliant cut diamonds, no assay marks, size L1/2 / 6, 4.0g. 

Estimate £1,000 - £1,500

A SAPPHIRE AND AQUAMARINE THREE STONE RING in 18ct white gold, set with an oval cut sapphire of 3.08 carats, flanked by rectangular step cut aquamarines all totalling 1.16 carats, in a cluster of round brilliant cut diamonds all totalling 0.25 carats

Estimate £1,000 - £1,500

AN OPAL, SAPPHIRE, GREEN GARNET AND DIAMOND DRESS RING in 18ct white gold, set with an oval cabochon opal in a cluster of round cut sapphires and green garnets, in a border of round brilliant cut diamonds, the shoulders set with further round brillia

Estimate £600 - £800

AN EMERALD AND DIAMOND DRESS RING in 18ct yellow gold and platinum, the textured tapering face set with a fancy cut emerald of 1.01 carats accented by trios of round brilliant cut diamonds, stamped E1.01 D0.53, stamped Pt900 K18, size O1/2 / 7.5, 13.

Estimate £2,000 - £3,000

A CITRINE AND PEARL CLUSTER RING in yellow gold, set with an oval cut citrine in a cluster of pearls, no assay marks, size I / 4.25, 12.4g. 

Estimate £500 - £700

A DIAMOND FULL ETERNITY RING in 18ct white gold, set all around with a row of single cut and round brilliant cut diamonds, no assay marks, J1/2 / 4.75, 2.2g.

Estimate £500 - £700

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with an oval cut sapphire of approximately 0.45 carats, accented on each side by trios of round brilliant cut diamonds, stamped 750, size N1/2 / 7, 6.7g. 

Estimate £800 - £1,200

A GREEN TOURMALINE AND DIAMOND CLUSTER RING in yellow gold, set with a mixed cut green tourmaline in a stylised cluster set with single cut diamonds, no assay marks, size M1/2 / 6.5, 4.3g. 

Estimate £1,000 - £1,500

A YELLOW SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow and white gold, the wide band set with a fancy mixed cut yellow sapphire accented by round brilliant cut diamonds, stamped 18CT, size O1/2 / 7.5, 13.7g. 

Estimate £800 - £1,200

A VINTAGE DIAMOND TWO STONE RING, 1930S in white gold, set with two old European cut diamonds of approximately 0.47 and 0.50 carats, accented by single cut diamonds, no assay marks, size L1/2 / 6, 3.3g. 

Estimate £800 - £1,200

AN UNTREATED EMERALD AND DIAMOND DRESS RING in platinum, set with an octagonal step cut emerald of 5.95 carats in a border of round brilliant cut diamonds, the stylised shoulders set with further diamonds, the diamonds all totalling 1.86 carats, no a

Estimate £12,000 - £16,000

A RETRO FRENCH CITRINE TANK RING in 18ct yellow gold, set with an octagonal step cut citrine of approximately 9.12 carats, French assay marks, size N1/2 / 7, 18.2g. 

Estimate £3,000 - £5,000

A VINTAGE CITRINE COCKTAIL RING in 18ct yellow gold, set with a rectangular cushion fancy cut citrine of approximately 45.19 carats, stamped 18K, O / 7.25, 22.0g.

Estimate £1,000 - £1,500

A SAPPHIRE AND DIAMOND CLUSTER RING in yellow gold, set with a cabochon cut sapphire in a border of old cut diamonds, no assay marks, size O1/2 / 7.5, 2.3g. 

Estimate £500 - £700

A PINK SAPPHIRE AND DIAMOND DRESS RING in yellow gold, set with a cushion cut pink sapphire, the stylised band accented by round brilliant cut diamonds and beaded and twisted ropework, no assay marks, size L / 5.75, 12.0g. 

Estimate £1,000 - £1,500

A DIAMOND FIVE STONE RING in 14ct yellow gold, set with a row of five round brilliant cut diamonds, the diamonds all totalling 0.7-0.8 carats, stamped 14K, size M1/2 / 6.5, 3.3g. 

Estimate £300 - £500

A PINK TOURMALINE AND DIAMOND DRESS RING in 18ct rose gold, set with an octagonal step cut pink tourmaline of 5.95 carats accented by two baguette cut diamonds and a border of round brilliant cut diamonds, stamped 750, size M1/2 / 6.5, 6.8g. 

Estimate £1,500 - £2,500

A DIAMOND SLICE RING in yellow gold, set all around with a row of graduating diamond slices, no assay marks, size M1/2 / 6.5, 1.6g. 

Estimate £1,500 - £2,500

A CHROME TOURMALINE AND DIAMOND RING in 18ct yellow gold, set with a cushion cut chrome green tourmaline of 12.76 carats in a stylised border of round brilliant cut diamonds, partial British hallmarks, size N / 6.75, 13.1g.

Estimate £3,500 - £4,500

A TURQUOISE FULL ETERNITY RING in 14ct yellow gold, set with two rows of cabochon cut turquoise, stamped 14K, size N1/2 / 7, 2.4g. 

Estimate £250 - £350

A FRENCH CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in 18ct white and yellow gold, set with an oval cut sapphire of 8.41 carats within a border of round cut diamonds, French assay marks, size M / 6.25, 5.9g. Accompanied by a gemmological report stating

Estimate £8,000 - £12,000

A PERIDOT AND DIAMOND THREE STONE RING in white gold, set with a round cut peridot between two round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 5.2g. 

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut sapphire in a cluster of round brilliant cut diamonds, no assay marks, size M / 6.25, 2.7g. 

Estimate £500 - £700

A PINK TOPAZ AND DIAMOND RING in platinum, set with a pear cut pink topaz of 7.11 carats within a border of single cut diamonds, with scrolling decoration to the openwork gallery, E & S maker's mark, stamped Platinum, size O / 7.25, 6.5g.

Estimate £5,000 - £7,000

AN ANTIQUE DIAMOND CLUSTER RING in white gold, set with an old cut diamond in a cluster of single cut diamonds, no assay marks, size Q / 8.25, 2.5g. 

Estimate £300 - £500

A SAPPHIRE AND DIAMOND FLOWER RING in 18ct yellow gold, set with an oval cabochon sapphire accented by step cut sapphires and round brilliant cut diamonds, inscribed D0.48 2.33 S1.49, stamped 18K, size N1/2 / 7, 8.2g. 

Estimate £1,500 - £2,500

A DIAMOND ARCHER'S RING in yellow gold, set throughout with diamond slices, no assay marks, size N1/2 / 7, 4.3g. 

Estimate £800 - £1,200

AN AMETHYST DRESS RING in yellow gold, set with an octagonal mixed cut amethyst accented by twisted wirework, no assay marks, size R / 8.5, 21.6g. 

Estimate £1,200 - £1,600

A RUBY AND DIAMOND RING in 18ct yellow gold, set with an oval cut ruby of 0.69 carats between two round brilliant cut diamonds, inscribed R0.69 0.23, stamped K18, size L / 5.75, 4.3g. 

Estimate £1,000 - £1,500

AN EGYPTIAN REVIVAL DIAMOND SCARAB BEETLE POISON RING in 18ct yellow gold, designed as a scarab set throughout with old and round brilliant cut diamonds, opening to reveal a locket compartment, the diamonds all totalling 1.85 carats, no assay marks,

Estimate £3,500 - £4,500

A PERIDOT AND DIAMOND DRESS RING in 18ct white and yellow gold, set with a round fancy cut peridot of 8.29 carats, accented by round brilliant cut diamonds and twisted rope work, stamped 750, size O1/2 / 7.5, 8.45g. 

Estimate £300 - £500

AN ANTIQUE ONYX AND DIAMOND RING in 18ct yellow gold, the rectangular face set with a cluster of old cut diamonds accented by polished onyx, the diamonds all totalling 1.5-1.8 carats, stamped 18CT, size R1/2 / 9, 3.2g. 

Estimate £1,500 - £2,500

AN EMERALD SOLITAIRE RING in 18ct white gold, set with a single octagonal step cut emerald of 1.13 carats, stamped 18K, size N / 6.75, 2.8g.

Estimate £600 - £800

A SPINEL AND DIAMOND CLUSTER RING in platinum, set with a rectangular cushion mixed cut spinel of 1.98 carats, in a cluster of round brilliant cut diamonds all totalling 0.88 carats, stamped Pt900, size P1/2 / 8, 7.8g.

Estimate £1,500 - £2,500

AN ANTIQUE DIAMOND RING in yellow gold, set with a rose cut diamond in an openwork meander style border, in a border of further rose cut diamonds, no assay marks, size P1/2 / 8, 3.9g. 

Estimate £1,500 - £2,500

A BLUE ZIRCON AND DIAMOND DRESS RING in 18ct white gold, set with a round cut blue zircon of approximately 4.36 carats in a stylised cluster of baguette and round brilliant cut diamonds all totalling 1.3-1.5 carats, no assay marks, size M1/2 / 6.5, 1

Estimate £2,000 - £3,000

LOT WITHDRAWN - PLEASE NOTE THAT THIS LOT HAS NOW BEEN WITHDRAWN FROM SALE. A BLUE SPINEL AND DIAMOND RING in 18ct white gold, set with a cushion cut blue spinel of 22.04 carts in a border of round brilliant cut diamonds, accented by further round b

Estimate £7,000 - £9,000

A RUBY, DIAMOND, EMERALD AND ONYX PARROT RING in 18ct white gold, designed as a parrot set with pear cut emerald eyes, accented throughout with round cut rubies, emeralds and sapphires, round brilliant cut diamonds and polished onyx, stamped K18 750,

Estimate £1,500 - £2,500

A TURQUOISE BOMBE RING in silver, set with pieces of polished turquoise, stamped 925, size K / 5.25, 12.9g. 

Estimate £400 - £600

A PERIDOT AND DIAMOND DRESS RING in white gold, set with an oval cut peridot, the shoulders accented by baguette cut diamonds, no assay marks, size K / 5.25, 5.4g. 

Estimate £800 - £1,200

A DIAMOND ETERNITY RING in platinum, set with a row of round cut diamonds accented by two rows of baguette cut diamonds, French assay marks, size I1/2 / 4, 8.6g. 

Estimate £2,000 - £3,000

AN AQUAMARINE AND DIAMOND RING in white gold, set with a cushion cut aquamarine of approximately 5.97 carats, accented by four rows of round brilliant cut diamonds, the diamonds all totalling 0.4-0.5 carats, no assay marks, size U / 10.25, 15.1g. 

Estimate £1,000 - £1,500

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

AN EMERALD AND DIAMOND DRESS RING in platinum, set with an octagonal step cut emerald of 8.64 carats accented by round brilliant cut diamonds, the band set with further round brilliant cut diamonds, stamped PT950, size M1/2 / 6.5, 9.9g. 

Estimate £10,000 - £15,000

A RUBY AND DIAMOND DRESS RING in 18ct yellow gold, set with a cushion cut ruby of 1.28 carats, accented by round brilliant cut diamonds, the diamonds all totalling 1.82 carats, inscribed 1.28 D1.82, stamped 18K, size M / 6.25, 7.0g. 

Estimate £2,000 - £3,000

A SOLITAIRE DIAMOND RING in 18ct white gold, set with a round brilliant cut diamond of 1.07 carats accented by further round brilliant cut diamonds, full British hallmarks, size N / 6.75, 3.6g.

Estimate £3,000 - £5,000

A STAR SAPPHIRE AND DIAMOND DRESS RING in platinum and 18ct yellow gold, set with an oval cabochon star sapphire of 3.61 carats, accented by rows of baguette cut diamonds, the diamonds all totalling 1.21 carats, inscribed 3.61 D1.21, stamped Pt900 18

Estimate £1,500 - £2,500

AN UNHEATED PADPARADSCHA SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with a rectangular cushion mixed cut orangy pink Padparadscha sapphire of 1.04 carats, in a cluster of round brilliant cut diamonds, the stylised openwork band set with

Estimate £3,000 - £5,000

A RUBY AND DIAMOND DRESS RING in 18ct white gold, set with three mixed cut rubies in a border of round brilliant cut diamonds, the shoulders set with baguette and round brilliant cut diamonds, stamped 750, size M1/2 / 6.5, 5.4g. 

Estimate £2,500 - £3,500

NO RESERVE - A DIAMOND FIVE STONE RING in yellow gold, set with a row of five round brilliant cut diamonds, the diamonds all totalling 0.7-0.8 carats, no assay marks, size O1/2 / 7.5, 2.3g. 

Estimate £200 - £300

AN ANTIQUE DIAMOND TIARA RING in yellow gold and silver, set with an old European cut diamond of approximately 0.80 carats accented by old and rose cut diamonds, the centre set with a cushion cut synthetic ruby, marked indistinctly, size J1/2 / 5, 4.

Estimate £3,000 - £5,000

A DIAMOND ENGAGEMENT RING in 14ct yellow gold, set with a round brilliant cut diamond of approximately 0.50 carats, accented on each side by further round brilliant cut diamonds, the diamonds all totalling 1.0-1.1 carats, stamped 14K, size M1/2 / 6.5

Estimate £600 - £800

AN EMERALD AND DIAMOND CLUSTER RING in platinum, set with an octagonal step cut emerald of 4.12 carats, in a cluster of marquise and round brilliant cut diamonds all totalling 0.67 carats, stamped Pt900, size L / 5.75, 9.7g.

Estimate £2,000 - £3,000

A PINK DIAMOND CLUSTER RING in 18ct white and rose gold, set with an oval brilliant cut fancy orangey pink diamond of 3.21 carats in two concentric borders of round brilliant cut pink diamonds, the bifurcated band set with round brilliant cut white d

Estimate £12,000 - £16,000

A DIAMOND FULL ETERNITY RING in platinum, set all around with a row of round brilliant cut diamonds, stamped platinum, size O / 7.25, 7.2g. 

Estimate £400 - £600

AN OPAL AND DIAMOND CLUSTER RING in 18ct yellow gold, set with three oval cabochon opals in a border of round brilliant cut diamonds, inscribed 5.69ct d0.26ct, stamped Au750, size N1/2 / 7, 6.8g. 

Estimate £1,000 - £1,500

AN EMERALD AND DIAMOND CLUSTER RING in platinum, set with an octagonal step cut emerald of 2.53 carats, in a cluster of round brilliant cut diamonds, the shoulders set with further diamonds, the diamonds all totalling 1.04 carats, stamped Pt900, size

Estimate £1,500 - £2,500

A YELLOW DIAMOND AND WHITE DIAMOND CLUSTER RING in 18ct white gold, set with a round brilliant cut treated yellow diamond of 2.20 carats in a cluster of round brilliant cut white diamonds, partial British hallmarks, size N1/2 / 7, 5.2g.

Estimate £2,000 - £3,000

A JADEITE JADE AND DIAMOND BALLERINA RING in 18ct yellow gold, set with an oval cabochon jadeite jade in a cluster of tapered baguette cut diamonds, stamped K18, size K1/2 / 5.5, 6.3g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND WEDDING RING SET in 14ct white gold, the central band set with an octagonal step cut emerald between two trillion cut diamonds, the two stacking bands set with round brilliant cut diamonds, stamped 14K, size I1/2 / 4.5, 8.4g. 

Estimate £1,500 - £2,500

A DIAMOND FULL ETERNITY RING in platinum, set all around with a row of princess cut diamonds all totalling 2.8-3.0 carats, partial British hallmarks, size O / 7.25, 5.7g. 

Estimate £1,500 - £2,500

A SPINEL AND DIAMOND RING in platinum, set with a trillion cut spinel of approximately 3.00 carats, in a border set with round brilliant cut diamonds, stamped PT950, size N / 6.75, 10.6g.

Estimate £3,500 - £5,500

AN EMERALD AND DIAMOND RING in 18ct white gold, set with an octagonal step cut emerald of approximately 2.36 carats, in a border of round brilliant cut diamonds, the shoulders set with further round brilliant cut diamonds, stamped 18K, size M / 6.25,

Estimate £2,500 - £3,500

TIFFANY & CO., A DIAMOND TIFFANY T RING in 18ct white gold, the band set with a row of round brillaint cut diamonds terminating in a T motif, signed Tiffany & Co., stamped Au750, size O / 7.25, 7.4g. 

Estimate £1,500 - £2,500

A BLUE SPINEL AND DIAMOND RING In 18ct yellow gold, set with an oval cut blue spinel of 6.10 carats to diamond set shoulders, stamped 18K, partial British hallmarks, size N / 6.75, 10.2g.  

Estimate £2,000 - £3,000

A DIAMOND BAND RING in platinum, set with five baguette cut diamonds, full British hallmarks, size P / 7.75, 10.7g. 

Estimate £500 - £700

A TURQUOISE AND DIAMOND DRESS RING in 14ct white gold, set to the centre with a cabochon cut turquoise in a double border of round brilliant cut diamonds, stamped 14K, N / 6.75, 3.5g. 

Estimate £600 - £800