NO RESERVE - AN EMERALD AND DIAMOND NAVETTE RING in 18ct yellow gold and platinum, set with an octagonal step cut emerald of approximately 2.55 carats on a ground of old cut diamonds, with further diamonds to the shoulders, the diamonds all totalling

Estimate £800 - £1,200

MAUBOUSSIN, A CITRINE, DIAMOND, AND ORANGE SAPPHIRE DRESS RING in 18ct yellow gold, set with a central mixed cut citrine of approximately 6.30 carats in a border of round cut orange sapphires, with four round brilliant cut diamonds set to each claw,

Estimate £600 - £800

A VINTAGE EMERALD AND DIAMOND CLUSTER RING in 18ct yellow gold, set with three round cut emeralds in a border of round brilliant cut diamonds, full British hallmarks for London 1982, size O1/2 / 7.5, 4.7g.

Estimate £600 - £800

A RUBY AND DIAMOND RING 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 £1,200 - £1,800

A MULTICOLOURED TOURMALINE FULL ETERNITY RING in 18ct yellow gold, set all around with three rows of cabochon pink, green, blue and yellow tourmalines, stamped 18, size N / 6.5, 3.3g.

Estimate £500 - £700

A GREEN TOURMALINE AND DIAMOND HALO RING in platinum, set with an oval cut green tourmaline of 3.83 carats in a border of round cut diamonds, the band set further diamonds, full British hallmarks, size M1/2 / 6.5, 8.2g.

Estimate £1,500 - £2,500

A YELLOW SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut yellow sapphire of 0.94 carats in a cluster of round brilliant cut diamonds, the diamonds totalling 0.96 carats, inscribed 0.94 0.96, full British hallmarks, size N

Estimate £1,500 - £2,500

AN AQUAMARINE AND DIAMOND CLUSTER RING in platinum, set with an oval cut aquamarine of 3.50 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.08 carats, inscribed 3.50 D1.08, full British hallmarks, size O1/2 / 7.7g.

Estimate £2,000 - £3,000

AN UNHEATED RUBY AND DIAMOND RING set with an oval cut ruby of 1.50 carats on a stylised cross-over band set with round brilliant cut diamonds, no assay marks, size M / 6, 4.3g.

Estimate £1,500 - £2,500

A 1.05 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 1.05 carats, full British hallmarks, size M / 6.25, 5.8g.

Estimate £2,500 - £3,500

A DIAMOND DRESS RING in platinum, set with four round brilliant cut diamonds all totalling 1.02 carats, full British hallmarks, size L / 5.75, 5.3g.

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of 1.43 carats in a cluster of round brilliant cut diamonds, inscribed 1.43, full British hallmarks, size N / 6.75, 4.9g.

Estimate £2,500 - £3,500

A DIAMOND DRESS RING in 18ct white gold, the face pave set with round brilliant cut diamonds all totalling 2.4-2.6 carats, stamped 750, size O1/2 / 7.5, 10.0g.

Estimate £2,500 - £3,500

AN ONYX DIAMOND DRESS RING in Art Deco design, comprising a polished onyx tablet, inlaid with three old cut diamonds, the shoulders accented with further old cut diamonds, the diamonds all totalling 0.7-0.9 carats, no assay marks, size T / 9.5, 5.3g.

Estimate £1,000 - £1,500

A BURMESE MUGHAL CARVED RUBY AND DIAMOND RING in 18ct white gold, set with a Mughal carved ruby in the form of a flower, accented by two pear cut diamonds both totalling 0.93 carats, inscribed D0.93, stamped 750, size O / 7.25, 8.0g.

Estimate £6,000 - £8,000

AN EMERALD AND DIAMOND CLUSTER RING in platinum, set with an oval cut emerald of 0.78 carats in a cluster of round brilliant cut diamonds, inscribed 0.78, full British hallmarks, size L1/2 / 6, 6.3g.

Estimate £2,000 - £3,000

A DIAMOND CLUSTER RING in 18ct white gold, set with a round cut diamond in a border of trillion cut diamonds, the diamonds all totalling 1.13 carats, full British hallmarks, size M / 6.25, 4.6g.

Estimate £800 - £1,200

A RUBY AND DIAMOND DRESS RING in white gold, of checkerboard design, set with old cut diamonds and round and cushion cut rubies, the diamonds all totalling 2.00 carats, the rubies all totalling 2.40 carats, no assay marks, size M / 6.25, 5.4g.

Estimate £3,500 - £4,500

A MULTICOLOURED SAPPHIRE AND DIAMOND RING in platinum, set with an unheated oval cut blue sapphire of 5.85 carats, an oval cut pink of 1.08 carats and an oval cut orange sapphire of 1.59 carats, within a border of round brilliant cut diamonds, stampe

Estimate £15,000 - £20,000

A PINK SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with a central rose cut diamond in a border of cushion cut pink sapphires and round brilliant cut diamonds, stamped 750, size M / 6.25, 6.5g.

Estimate £4,000 - £6,000

A PAIR OF YELLOW DIAMOND AND DIAMOND DROP EARRINGS in 18ct white gold, each set with a round brilliant cut diamond suspending a pear shaped yellow diamond of 1.04 carats in a border of round brilliant cut diamonds, stamped 750, 1.7cm, 3.9g. Accompani

Estimate £5,000 - £7,000

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

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

AN ART DECO SAPPHIRE AND DIAMOND DRESS RING in yellow and white gold, set with five round cut sapphires accented by rose cut diamonds, no assay marks, size P1/2 / 7.75, 2.8g.

Estimate £300 - £500

A SAPPHIRE AND DIAMOND RING in 18ct gold and platinum, set with a cushion cut sapphire of 7.98 carats in an openwork border set with round brilliant cut diamonds, stamped 18K Pt900, size L / 5.75, 10.4g.

Estimate £10,000 - £15,000

A SAPPHIRE AND DIAMOND CROSSOVER RING in 18ct yellow gold, set with two cabochon sapphires accented by princess cut diamonds and pave set round brilliant cut diamonds, the sapphires both totalling 1.26 carats, the diamonds all totalling 2.25 carats,

Estimate £2,000 - £3,000

A DIAMOND CLUSTER RING in 18ct yellow gold, set with a cluster of oval cut diamonds, the diamonds all totalling 4.01 carats, stamped 750, size M / 6.25, 7.0g.

Estimate £3,000 - £5,000

AN EMERALD AND DIAMOND CLUSTER RING in 18ct white gold, set with three round cut emeralds in borders of round cut diamonds, full British hallmarks, size L1/2 / 6, 3.5g.

Estimate £800 - £1,200

A RUSSIAN WEDDING RING in 9ct yellow gold, comprising three interlocking yellow, rose and white gold bands, British hallmarks for 9ct gold, size P / 7.5, 5.3g.

Estimate £100 - £150

A DIAMOND, RUBY, EMERALD AND SAPPHIRE PANTHER RING in 18ct yellow gold, the gold band with an articulated panther head jewelled with round brilliant cut diamonds and round cut rubies, emeralds and sapphires, stamped 18K, size M / 6.25, 9.2g.

Estimate £1,000 - £1,500

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

A SAPPHIRE AND DIAMOND THREE STONE RING in 18ct yellow gold, set with an oval cut sapphire of approximately 1.49 carats between two round cut diamonds both totalling 0.3-0.4 carats, stamped 18ct, size Q / 8, 2.9g.

Estimate £600 - £800

AN ANTIQUE DIAMOND RING in 14ct yellow gold and silver, the octagonal face set with a pear shaped rose cut diamond, accented by further rose cut diamonds, stamped 585, size O / 7.25, 2.5g.

Estimate £300 - £500

AN ANTIQUE GEORGIAN DIAMOND CLUSTER RING in silver, set with a rose cut diamond of 9.6mm in a cluster of rose cut diamonds, the band set all around with a row of rose cut diamonds, no assay marks, size L / 5.75, 8.4g.

Estimate £5,000 - £7,000

AN ANTIQUE DIAMOND RING in gold, set with three rose cut diamonds, no assay marks, size J / 4.75, 1.9g.

Estimate £150 - £250

AN ENAMEL RAM RING in yellow gold, designed as the head of a ram with yellow, orange, brown, black and white enamel, indistinct assay marks, size L / 5.75, 15.9g.

Estimate £600 - £800

A STAR SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a cabochon star sapphire of approximately 5.50 carats, accented by six round brilliant cut diamonds, stamped 18K, size N / 6.75, 9.8g.

Estimate £800 - £1,200

A CUBIC ZIRCONIA AND DIAMOND RING in 18ct yellow gold, set with a central princess cut cubic zirconia stone, each shoulder set with three princess cut diamonds, full British hallmarks, size J / 4.75, 3.9g.

Estimate £400 - £600

A JADEITE JADE AND DIAMOND CROSSOVER RING in yellow gold, set with two pear shaped jadeite jade cabochons accented by round brilliant cut diamonds, no assay marks, size M / 6.25, 4.4g.

Estimate £250 - £350

A GENTLEMAN'S DIAMOND DRESS RING in 9ct yellow gold, the rectangular face set with twenty round brilliant cut diamonds all totalling 2.3-2.6 carats, to scroll engraved shoulders, full British hallmarks, size S / 9.25, 44.5g.

Estimate £1,500 - £2,500

A COLOMBIAN EMERALD AND DIAMOND DRESS RING in 18ct yellow gold, set with a pear cut emerald of 1.87 carats in a pear shaped border set with round brilliant cut diamonds, accented by further diamonds, stamped 18K, size M / 6.25, 8.9g. Accompanied by a

Estimate £8,000 - £12,000

A MUGHAL CARVED EMERALD AND DIAMOND RING in 22ct yellow gold, the hexagonal face set with a Mughal carved emerald inlaid with an old cut diamond, stamped 22ct, size M / 6.25, 18.1g.

Estimate £6,000 - £8,000

AN ANTIQUE AMETHYST AND DIAMOND RING, 19TH CENTURY in yellow gold and silver, set with an oval cut amethyst within a cluster of old and rose cut diamonds, no assay marks, size M / 6, 7.7g.

Estimate £1,000 - £1,500

A GOLDEN TOPAZ AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut golden topaz of 2.27 carats in a cluster of round brilliant cut diamonds, stamped 750, size N / 6.75, 6.2g.

Estimate £1,500 - £2,500

AN ANTIQUE SAPPHIRE DOUBLET AND DIAMOND CLUSTER RING in yellow gold, set with a round cut sapphire doublet in a cluster of rose cut diamonds, no assay marks, size L1/2 / 6, 3.8g.

Estimate £600 - £800

A VINTAGE DIAMOND NAVETTE RING in yellow gold, the navette face set with old cut 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 RUBELLITE TOURMALINE AND DIAMOND CLUSTER RING in 18ct white gold, set with a cushion shaped rubellite tourmaline of approximately 16.96 carats in a border of round brilliant cut diamonds, stamped 750, size O / 7.25, 20.5g.

Estimate £10,000 - £12,000

A DIAMOND BAND RING in 18ct white gold, formed of a series of articulated batons set with round brilliant cut diamonds all totalling 1.2-1.4 carats, stamped 18ct, size P / 7.5, 16.6g.

Estimate £1,000 - £1,500

A BURMA NO HEAT SAPPHIRE RING in white gold, set with an emerald cut sapphire of 1.13 carats, no assay marks, size M1/2 / 6.5, 5.7g. Accompanied by a gemmological report stating the sapphire is of Burmese (Myanmar) origin with no indication of heat t

Estimate £2,500 - £3,500

A DIAMOND CLUSTER RING in platinum, set with a cluster of round brilliant cut diamonds, the diamonds totalling 1.56 carats, inscribed 1.56, full British hallmarks, size M1/2 / 6.5, 6.4g.

Estimate £1,500 - £2,500

A MORGANITE AND DIAMOND RING in 18ct rose gold, set with an octagonal step cut morganite of 2.13 carats, the band pave set with round brilliant cut diamonds, full British hallmarks, size M / 6.23, 3.6g.

Estimate £800 - £1,200

A HEART SHAPED DIAMOND DRESS RING in platinum, set with a trillion cut diamond of 1.00 carat in a heart shaped border of round brilliant cut diamonds, with further pave set round brilliant cut diamonds, the diamonds all totalling 2.00 carats, partial

Estimate £4,000 - £6,000

A RUBY AND DIAMOND DRESS RING in platinum, set with a cushion cut ruby of 1.25 carats accented by tapered baguette and round brilliant cut diamonds, stamped pt900, size L / 5.75, 9.4g.

Estimate £2,500 - £3,500

A FANCY DEEP BROWNISH ORANGE DIAMOND RING in platinum, set with a fancy deep brownish orange round brilliant cut diamond of 0.35 carats in a border of round brilliant cut diamonds, further diamonds set to the shoulders, stamped PT950, size K / 5.25,

Estimate £1,200 - £1,800

A RUBY, EMERALD AND DIAMOND SNAKE RING in 18ct yellow gold, designed as a coiled snake in openwork yellow gold, the head set with a marquise cut ruby accented by round brilliant cut diamonds, round cut rubies and cabochon emeralds, stamped 18K, size

Estimate £3,000 - £5,000

A TSAVORITE GARNET AND DIAMOND CLUSTER RING in yellow gold, set with a cabochon tsavorite garnet in a cluster of alternating round brilliant cut diamonds and cabochon tsavorite garnets, no assay marks, size N / 6.75, 5.5g.

Estimate £800 - £1,200

A DIAMOND AND EMERALD PANTHER BAND RING in 18ct yellow and white gold, the band depicting three panthers set with round cut diamonds and a round cut emerald, stamped 750, size I / 4.25, 13.3g.

Estimate £1,000 - £1,500

AN EMERALD AND DIAMOND RING in 18ct yellow gold, set with an oval cut emerald of 0.82 carats in a border of tapered baguette cut diamonds, stamped 18K, size M / 6.25, 10.7g.

Estimate £1,200 - £1,600

A BROWN AND WHITE DIAMOND RING in 14ct yellow gold, set with an oval cut brown diamond in a border of round brilliant cut diamonds, the band set with further diamonds, stamped 14K, size M / 6.75, 3.1g.

Estimate £800 - £1,200

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a round cut ruby of 0.95 carats in a border of round brilliant cut diamonds, full British hallmarks, size N1/2 / 7, 4.9g.

Estimate £1,200 - £1,600

A DIAMOND, SPINEL AND SAPPHIRE BIRD RING in 18ct yellow gold, designed as a bird pave set with round cut diamonds and a round cut sapphire eye, accented by an oval cut spinel of 1.20 carats, the band accented by further round cut diamonds, stamped Au

Estimate £1,500 - £2,500

A DIAMOND CLUSTER RING in 9ct white and yellow gold, set with nine princess cut diamonds all totalling 1.0-1.2 carats, size M / 6.25, 3.7g.

Estimate £200 - £300

A SAPPHIRE AND DIAMOND RING in platinum, set with a cabochon sapphire of 6.81 carats, the shoulders set with half moon and baguette cut diamonds, stamped IRID pt, size O / 7.25, 5.5g.

Estimate £8,000 - £12,000

A DIAMOND RING in platinum, set with a row of round brilliant and baguette cut diamonds accented by two rows of princess cut diamonds, stamped Pt900, size J1/2 / 5, 12.6g.

Estimate £3,000 - £5,000

A BURMA NO HEAT SAPPHIRE AND DIAMOND RING set with a cushion cut sapphire or 6.36 carats, in a concentric border of round brilliant cut diamonds and calibre cut sapphires, the diamonds all totalling 1.4-1.5 carats, no assay marks, size N / 6.5, 11.7g

Estimate £20,000 - £30,000

A SOLITAIRE DIAMOND 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 ETERNITY RING set all round with a row of marquise cut diamonds all totalling 4.5-4.6 carats, no assay marks, size L / 6, 5.1g.

Estimate £2,000 - £3,000

A RUBY AND DIAMOND CLUSTER RING set with a round cut ruby of 0.86 carats, surrounded by a border of round brilliant cut diamonds, no assay marks, size K1/2 / 5.25, 3.0g.

Estimate £800 - £1,200

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 DIAMOND HALF ETERNITY RING in platinum, the band half set with a row of round brilliant cut diamonds, partial British hallmarks, size I1/2 / 4.5, 4.0g.

Estimate £200 - £300

A TSAVORITE GARNET AND DIAMOND CLUSTER RING in platinum, set with a cushion cut tsavorite garnet of 1.14 carats in a double border of round brilliant cut diamonds, the band set with further diamonds, full British hallmarks, size L1/2 / 6, 8.7g.

Estimate £2,000 - £3,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND DRESS RING in 14ct white gold, set with a cabochon sapphire of 12.00 carats accented by rows of old cut diamonds, stamped 585, size Q1/2 / 8.25, 7.8g. Accompanied by a gemmological report stating the sapphire is

Estimate £4,000 - £6,000

A RUBELLITE TOURMALINE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut rubellite tourmaline of 2.70 carats in a double border of round cut diamonds, stamped Au750, size N / 6.75, 4.5g.

Estimate £600 - £800

TIFFANY & CO, AN ATLAS RING, 1995 in sterling silver, in two tone design, signed Tiffany & Co, stamped 925, size L / 5.5, 9.2g.

Estimate £80 - £120

A DIAMOND SEVEN STONE RING in 9ct yellow gold, set with a row of single cut diamonds, British hallmarks for 9ct gold, size P / 7.5, 2.4g.

Estimate £100 - £150

A JADEITE JADE RING in 18ct yellow gold, set with a marquise shaped jadeite jade, stamped 18K, size M1/2 / 6.5, 3.6g.

Estimate £800 - £1,200

A MIXED LOT OF THREE RINGS two set with a single piece of polished onyx and green hardstone respectively, one set with a round cut red gemstone, one with indistinct assay marks, 12.0g total weight.

Estimate £60 - £80

A SAPPHIRE AND PEARL RING in 9ct yellow gold, set with an oval cut sapphire surrounded by a cluster of eight pearls, full British hallmarks, size Q / 8, 3.5g.

Estimate £100 - £150

A NATURAL PEARL AND DIAMOND RING set with a natural saltwater pearl of 10.4mm accented by single cut diamonds, no assay marks, size L / 5.75, 3.5g. Accompanied by a gemmological report stating the pearl is natural and of saltwater origin.

Estimate £3,000 - £5,000

A STAR RUBY AND DIAMOND RING in yellow gold, set with a cabochon star ruby of approximately 2.70 carats, accented by round brilliant cut diamonds, no assay marks, size L / 6, 3.6g.

Estimate £150 - £250

AN EMERALD GYPSY RING in 18ct yellow gold, set with an oval cut emerald of approximately 6.30 carats, stamped 750, size N1/2 / 7, 11.5g.

Estimate £6,000 - £8,000

A SAPPHIRE AND DIAMOND CROSSOVER RING in 18ct yellow gold, set with an oval cut diamond of 1.05 carats on a row of tapered baguette cut sapphires and an oval cut sapphire of 1.07 carats on a row of tapered baguette cut diamonds, stamped 18K, size L /

Estimate £3,000 - £5,000

A DIAMOND HALF ETERNITY RING in 18ct white gold, set with a central row of baguette cut diamonds between two rows of round cut diamonds, stamped 750, size P / 7.75, 9.3g.

Estimate £300 - £500

A CHOCOLATE PEARL AND DIAMOND RING in 18ct white gold, set with a chocolate pearl of 12.2mm, on a stylised band set with round cut diamonds, stamped 18K, size M1/2 / 6.5, 9.1g.

Estimate £200 - £300

A SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold, designed as a bow set with a row of step cut sapphires and tapered baguette cut diamonds, inscribed 0.28 0.81, stamped 18K, size L1/2 / 6, 6.0g.

Estimate £1,500 - £2,500

A TANZANITE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a cushion cut tanzanite of 3.40 carats in a border of round brilliant cut diamonds, inscribed 3.40, full British hallmarks, size M1/2 / 6.5, 6.7g.

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND DRESS RING in platinum, set with an oval cut sapphire of 1.19 carats, accented by round brilliant and baguette cut diamonds, stamped PT900, size M1/2 / 6.5, 10.5g.

Estimate £1,500 - £2,500

A DIAMOND SOLITAIRE RING in 14ct white gold, set with a princess cut diamond of 0.10 carats, stamped 14K, size M / 6.25, 1.9g.

Estimate £100 - £150

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with a cushion cut sapphire of 1.85 carats in a double border of round brilliant cut diamonds, the band set with further diamonds, stamped PT950, size L1/2 / 6, 7.5g.

Estimate £3,000 - £5,000

A SAPPHIRE AND DIAMOND RING in platinum, set with a round cut sapphire of 4.00 carats between two tapered baguette cut diamonds, stamped 10% IRID PLAT, size U1/2 / 10.5, 5.6g.

Estimate £5,000 - £7,000

A VINTAGE SAPPHIRE AND DIAMOND RING in white gold, the domed face set with concentric rings of round cut blue sapphires and single cut diamonds, no assay marks, size P / 7.5, 11.9g.

Estimate £400 - £600

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

A VINTAGE LAPIS LAZULI AND DIAMOND COCKTAIL RING in yellow gold, set with a polished piece of lapis lazuli, accented by single cut diamonds, marked indistinctly, size M / 6.25, 9.0g.

Estimate £400 - £600