NO RESERVE - A TURQUOISE AND DIAMOND RING in 18ct white gold, set with an oval cabochon turquoise accented by baguette and round brilliant cut diamonds, French assay marks, size L / 5.75, 9.9g. 

Estimate £1,000 - £1,500

GARRARD & CO., A VINTAGE BURMA NO HEAT RUBY AND DIAMOND THREE STONE RING in 18ct yellow gold, set with a cushion cut ruby of approximately 1.00 carat flanked by two old cut diamonds, the diamonds totalling approximately 0.90 carats, Garrard & Co. mak

Estimate £2,000 - £3,000

CARTIER, A DIAMOND DRESS RING in 18ct yellow gold, the openwork ring in bombe design, set with round brilliant cut diamonds, signed Cartier and numbered, stamped 750, size L1/2 / 6, 5.2g. Accompanied by a Cartier box. 

Estimate £800 - £1,200

A SOLITAIRE DIAMOND RING in 18ct white gold, set with a round brilliant cut diamond of approximately 2.30 carats, stamped 18CT, size L1/2 / 6, 4.9g. 

Estimate £4,000 - £6,000

A BURMESE RUBY AND DIAMOND CLUSTER RING in platinum, set with an oval cut ruby of 3.41 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.35 carats, inscribed 3.41 D1.35, stamped Pt900, size L / 5.75, 6.8g. 

Estimate £3,000 - £5,000

CARVIN FRENCH, A D COLOUR DIAMOND RING in platinum, set with an emerald cut diamond of 1.90 carats between two trapeze cut diamonds, stamped PT950, size I / 4.25, 11.6g. Accompanied by a GIA report stating that the diamond is D colour and VS1 clarity

Estimate £10,000 - £15,000

A FINE EMERALD AND DIAMOND RING in 18ct white gold, set with a rectangular mixed cut emerald of 14.16 carats, between two baguette cut diamonds totalling 1.00 carat, stamped 18K 750, size L / 5.5, 12.6g. Accompanied by a gemmological rep

Estimate £20,000 - £30,000

VAN CLEEF & ARPELS, A PEARL AND DIAMOND CROSSOVER RING in 18ct yellow gold, set with a black and a white pearl, accented by pave set round brilliant cut diamonds, maker's mark, French assay marks, size K / 5.25, 7.5g. 

Estimate £6,000 - £8,000

CARTIER, AN ENAMEL PANTHERE RING in 18ct yellow gold, the wide gold band accented with spots of black enamel, signed Cartier and numbered, French assay marks, British import marks, size N1/2 / 7, 15.0g. 

Estimate £3,500 - £4,500

CARTIER, A DIAMOND, TSAVORITE GARNET AND ONYX PANTHERE RING in 18ct white gold, designed as a coiled panther, the head pave set with round brilliant cut diamonds, the eyes set with pear cut tsavorite garnets, the nose set with a polished onyx, signed

Estimate £8,000 - £12,000

SOLANGE AZAGURY-PARTRIDGE, A DIAMOND RING in black rhodium plated 18ct white gold, set with an octagonal step cut diamond, the collet and bifurcated band pave set with round brilliant cut diamonds, SA-P maker's mark, full British hallmarks, size M /

Estimate £5,000 - £7,000

A FANCY INTENSE YELLOW ORANGE DIAMOND RING in platinum, set with a cushion cut fancy intense yellow orange diamond of 1.36 carats in a double border of round brilliant cut diamonds, the bifurcated band set with further diamonds, inscribed D0.55ct TDW

Estimate £3,000 - £5,000

VAN CLEEF & ARPELS, A PIGEON'S BLOOD BURMA NO HEAT RUBY AND DIAMOND RING in yellow gold, set with a heart shaped ruby of 1.58 carats in a border of round brilliant cut diamonds, accented by rows of further round brilliant and baguette cut diamonds, i

Estimate £20,000 - £25,000

A NATURAL PINKISH BROWN DIAMOND BUBBLE RING in platinum, set with round brilliant cut natural pinkish brown diamonds of varying hues, totalling 5.10 carats, accented by round brilliant cut diamonds, inscribed D:5.40ct, stamped Pt950, size P1/2 / 8, 9

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND CLUSTER RING in white gold, set with an oval cut sapphire of 3.60 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 2.00 carats, no assay marks, sizing band size M / 6.25, 8.4g. 

Estimate £3,500 - £4,500

A SAPPHIRE AND DIAMOND THREE STONE RING in platinum, set with an oval cut sapphire of approximately 3.02 carats between two round brilliant cut diamonds, the diamonds both totalling 0.8-0.9 carats, partial British hallmarks, size M1/2 / 6.5, 5.0g. 

Estimate £3,000 - £5,000

A DIAMOND FULL ETERNITY RING in 18ct white gold, sell all around with a row of round brilliant cut diamonds all totalling 4.12 carats, stamped 750, size M / 6.25, 5.3g. 

Estimate £3,500 - £4,500

A VERY FINE BRAZILLIAN ALEXANDRITE AND DIAMOND CLUSTER RING in platinum, set with an oval cut alexandrite of 1.18 carats in a cluster of round brilliant cut diamonds, the stylised shoulders set with further round brilliant cut diamonds, inscribed 1.1

Estimate £10,000 - £15,000

CARTIER, A MAILLON PANTHERE RING in 18ct white gold, the band comprising maillon links, signed Cartier and numbered, French assay marks, size N / 6.75, 14.4g. Accompanied by a Cartier box and certificate of authenticity. 

Estimate £1,000 - £1,500

BULGARI, AN AMETHYST RING in 22ct yellow gold, the geometric band set with an oval cut amethyst, signed BVLGARI NY, stamped 22K, size J / 4.75, 17.6g. 

Estimate £2,000 - £3,000

A FINE 9.33 CARAT COLOMBIAN EMERALD AND DIAMOND RING in platinum, set with an octagonal step cut emerald of 9.33 carats, the shoulders set with baguette cut diamonds, stamped 10% IRID PLAT, size H1/2 / 4, 9.0g. Accompanied by a facsimile gemmological

Estimate £20,000 - £30,000

BULGARI, A SAPPHIRE RING in yellow gold, set with an octagonal step cut sapphire of approximately 3.50 carats, signed Bulgari, no assay marks, size L1/2 / 6, 9.3g. 

Estimate £15,000 - £20,000

A SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of approximately 5.90 carats, each shoulder set with two baguette cut diamonds, stamped plat, size L / 5.75, 7.0g. 

Estimate £30,000 - £50,000

A FINE AQUAMARINE AND DIAMOND RING in 18ct white gold, set with an octagonal step cut aquamarine of approximately 25.00 carats, the gallery and shoulders set with round brilliant cut diamonds, no assay marks, size N1/2 / 7, 24.6g. 

Estimate £6,000 - £8,000

A 1.19 CARAT DIAMOND SOLITAIRE RING in platinum, set with a pear cut diamond of 1.19 carats, the band half set with a row of round cut diamonds, partial British hallmarks, size J1/2 / 5, 3.4g. 

Estimate £4,000 - £6,000

A BURMA NO HEAT SAPPHIRE AND DIAMOND RING in platinum, set with a cabochon sapphire of 12.32 carats in a cluster of old cut diamonds, no assay marks, size P1/2 / 8, 7.5g. Accompanied by a gemmological report stating that the sapphire is of Burmese (M

Estimate £20,000 - £30,000

BULGARI, A RUBY RING in 18ct yellow gold, set with a fancy cabochon cut ruby of 10.80 carats, inscribed 10.80, signed Bvlgari, stamped 18K, size G1/2 / 3.5, 17.1g. 

Estimate £8,000 - £12,000

CARTIER, A LAKARDA PANTHERE RING in 18ct white gold, designed as a coiled panther, set with pear cut tsavorite garnet eyes and a carved onyx nose, signed Cartier and numbered, French assay marks, maker's mark, size I / 4 1/2, 14.6g.

Estimate £6,000 - £8,000

A SAPPHIRE AND DIAMOND RING in platinum, the modernist face set with an octagonal step cut sapphire of 2.00 carats, accented by round brilliant and baguette cut diamonds all totalling 2.50 carats, stamped PLAT, size N1/2 / 7, 12.0g. 

Estimate £3,000 - £5,000

A VERY FINE BURMA NO HEAT SPINEL AND DIAMOND RING in platinum, set with a cushion cut spinel of 6.08 carats, accented on each side by a tapered baguette cut diamond, marked indistinctly, size J / 4.75, 6.1g. Accompanied by a gemmological report stati

Estimate £25,000 - £35,000

A FANCY COLOURED GREEN DIAMOND CLUSTER RING in platinum, set with a pear brilliant cut green diamond of 2.80 carats, in a cluster of round brilliant cut and triangular step cut diamonds, stamped PLAT, size K / 5.25, 12.9g. 

Estimate £12,000 - £16,000

BULGARI, A MOTHER OF PEARL AND ILLUSION DIAMOND RING in 18ct white gold, comprising mother of pearl with a stylised design set with round brilliant cut diamonds, signed BVLGARI, Italian assay marks, size M / 6.25, 11.8g.

Estimate £3,000 - £5,000

AN EMERALD AND DIAMOND BOMBE RING set with a cabochon emerald of 49.00 carats accented throughout with rose cut diamonds, the diamonds all totalling 4.70 carats, Italian assay marks, stamped 750, size Q / 8.25, 39.5g.

Estimate £12,000 - £16,000

BULGARI, AN EXCEPTIONAL EMERALD AND DIAMOND DRESS RING, 1970S in yellow gold, designed as a stylised bird set with a cluster of round brilliant cut diamonds, accented by rows of round and oval cut emeralds and further round brilliant cut diamonds, th

Estimate £20,000 - £25,000

A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with a cushion cut sapphire of 12.90 carats in a cluster of round brilliant and tapered baguette cut diamonds, the shoulders set with further diamonds, the diamonds all totalling 1.44 carats, inscr

Estimate £10,000 - £15,000

A DIAMOND DRESS RING in 18ct yellow gold and platinum, set with a transitional cut diamond of approximately 1.10 carats, the openwork band designed as a honeycomb, French import marks, size M / 6.25, 12.2g. 

Estimate £2,500 - £3,500

A COLOMBIAN EMERALD AND DIAMOND RING in white gold, set with an octagonal step cut emerald of 1.36 carats flanked by two trillion cut diamonds, no assay marks, size N / 6.75, 3.5g. Accompanied by a gemmological report stating that the emerald is of C

Estimate £3,000 - £5,000

A DIAMOND TOI ET MOI RING in yellow gold, set with two old cut diamonds, the diamonds each weighing approximately 0.60 carats and 1.20 carats, no assay marks, size O1/2 / 7.5, 3.5g. 

Estimate £1,500 - £2,500

A DIAMOND GYPSY RING in 18ct blackened gold, set with a round brilliant cut diamond of 2.67 carats, French import marks, size M / 6.25, 10.0g. 

Estimate £8,000 - £12,000

A DIAMOND GYPSY RING in 18ct yellow gold, set with a round brilliant cut diamond of 0.91 carats on a tapering band with a satin finish, stamped 750, size M / 6.25, 6.1g. 

Estimate £1,800 - £2,200

A 5.49 CARAT UNHEATED SPINEL RING in 22ct yellow gold, set with an elongated cushion cut spinel of 5.49 carats, the band with a satin finish, stamped JNP, no assay marks, size N1/2 / 7, 11.4g. Accompanied by a gemmological report stating that the spi

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND RING in platinum, set with an octagonal step cut sapphire of approximately 1.88 carats, accented by baguette and single cut diamonds, no assay marks, size N1/2 / 7, 3.3g. 

Estimate £4,000 - £6,000

A 10.60 CARAT UNHEATED YELLOW SAPPHIRE SOLITAIRE RING in platinum, set with a cushion cut yellow sapphire of 10.60 carats, no assay marks, size Q / 8.25, 7.3g. With a gemmological verbal assessment stating that the sapphire shows no indication of hea

Estimate £2,000 - £3,000

A BURMESE RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of 10.35 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 2.0-2.5 carats, stamped 18K, size N / 6.75, 9.3g. 

Estimate £15,000 - £20,000

A STAR SAPPHIRE AND DIAMOND RING in platinum, set with a cabochon star sapphire of 15.50 carats, the shoulders set with trillion and round brilliant cut diamonds all totalling 1.38 carats, inscribed 15.50 D1.38, stamped Pt900, size L1/2 / 6, 14.6g. 

Estimate £2,000 - £3,000

A DIAMOND AND RUBY DRESS RING in platinum, set with an old cut diamond of approximately 1.40 carats, accented by carre cut rubies and round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 7.1g. 

Estimate £4,000 - £6,000

A FINE DIAMOND FULL ETERNITY RING in platinum, set all around with a row of emerald cut diamonds all totalling 14.0-15.0 carats, no assay marks, size L / 5.75, 10.1g. 

Estimate £35,000 - £45,000

A YELLOW DIAMOND DRESS RING in 18ct white gold, set with a pear cut yellow diamond of 1.23 carats, in a stylised cluster of marquise and baguette cut diamonds all totalling 1.80 carats, stamped 18, size M / 6.25, 8.0g.

Estimate £4,000 - £6,000

A DIAMOND BOMBE RING set with an old European cut diamond of approximately 0.70 carats, accented by round brilliant cut diamonds, the accenting diamonds all totalling 2.0-2.5 carats, marked indistinctly, size L / 5.75, 12.5g. 

Estimate £2,500 - £3,500

VAN CLEEF & ARPELS, AN EMERALD AND DIAMOND DRESS RING in 18ct yellow gold, set with an oval cabochon emerald, accented by rows of round brilliant cut diamonds and rectangular step cut emeralds, Van Cleef & Arpels maker's mark, French assay marks, siz

Estimate £8,000 - £12,000

A 3.02 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 3.02 carats between two tapered baguette cut diamonds, stamped platinum, size O / 7.25, 4.5g. Accompanied by a facsimile GIA report stating that the

Estimate £30,000 - £50,000

HENNELL, A DIAMOND RING in 18ct yellow gold, the open band set with a round brilliant cut diamond of approximately 0.25 carats, HBS maker's mark, full British hallmarks, size K1/2 / 5.5, 9.5g. 

Estimate £800 - £1,200

ELIZABETH GAGE, A ZODIAC RING in 18ct white gold, with the Cancer zodiac symbol to a brushed gold background and accented by gold wirework, signed GAGE, full British hallmarks, size G / 3.25, 8.3g. Accompanied by the original Elizabeth Gage ring box.

Estimate £600 - £800

A NATURAL PEARL RING in yellow gold, set with a natural saltwater pearl of 9.2mm, stamped KW, 20, marked indistinctly, size Q1/2 / 8.25, 6.4g. Accompanied by a gemmological report stating that the pearl is of natural saltwater origin.

Estimate £1,000 - £1,500

A SOLITAIRE DIAMOND RING in platinum, set with an old European cut diamond of approximately 3.00 carats, the shoulders accented by baguette cut diamonds, stamped PLAT, size M1/2 / 6.5, 4.4g. 

Estimate £15,000 - £20,000