PALOMA PICASSO FOR TIFFANY & CO., A PINK TOURMALINE AND ORANGE TOPAZ RING the tapering ring horizontally set with two rectangular step cut pink tourmalines, accented on each side by a rectangular step cut orange topaz, signed T&Co., stamped 18K, size

Estimate £1,500 - £2,500

AN ANTIQUE DIAMOND AND RUBY RING, EARLY 20TH CENTURY set to the centre with an old cut diamond accented on each side by trios of rose cut diamonds, accented by a border set with four further old cut diamonds and calibre cut rubies, the diamonds all t

Estimate £4,000 - £6,000

A GREEN TOURMALINE AND DIAMOND RING set with a sugarloaf cabochon green tourmaline of 24.72 carats, the stylised gallery and shoulders set with round brilliant cut diamonds, inscribed 27.72 D0.66, stamped K18, size N / 6.75, 16.2g. 

Estimate £3,000 - £5,000

AN ANTIQUE DIAMOND RING in yellow gold and silver, set with a pear shaped rose cut diamond in a cluster of old cut diamonds, each shoulder set with a further diamond, no assay marks, size O / 7.25, 3.2g.

Estimate £5,000 - £7,000

A JADEITE JADE AND DIAMOND RING set with an oval cabochon jadeite jade, the shoulders set with round and baguette cut diamonds, stamped PLAT, size N / 6.75, 4.3g. 

Estimate £1,500 - £2,500

AN IMPORTANT 10.08 CARAT DIAMOND RING set with an oval brilliant cut diamond of 10.08 carats between two pear brilliant cut diamonds, the accenting diamonds totalling 1.6-1.7 carats, stamped 950, sizing beads size K / 5.25, 10.0g. Accompanied by a fa

Estimate £60,000 - £80,000

LOT WITHDRAWN

Estimate £1,500 - £2,500

FAVERO, A PIGEON'S BLOOD BURMESE RUBY AND DIAMOND RING in 18ct white gold, set with an oval cut ruby of 2.67 carats in a border of round brilliant cut diamonds, the shoulders set with further diamonds, inscribed D.ct0.21 RCt2.67, signed Favero, full

Estimate £15,000 - £20,000

AN ITALIAN OWL CAMEO AND DIAMOND RING in 18ct yellow gold, set with an oval shell cameo carved to depict an owl, within a border of round brilliant cut diamonds, Italian assay marks, stamped 750, size M / 6.25, 6.1g. 

Estimate £500 - £700

A FINE BURMA NO HEAT RUBY AND DIAMOND THREE STONE RING in 18ct white gold, set with a cushion cut ruby of 4.67 carats between two transitional cut diamonds weighing 1.02 and 0.94 carats, full British hallmarks for Birmingham 1975, size O / 7.25, 4.8g

Estimate £40,000 - £60,000

DE AMBROGIO, A GOLDEN PEARL AND DIAMOND RING in 18ct yellow gold, set with a pearl of 13.9mm, the shoulders set with round brilliant cut diamonds, signed De Ambrogio, Italian assay marks, stamped 750, size N1/2 / 7, 14.0g. 

Estimate £1,000 - £1,500

VAN CLEEF & ARPELS, AN ONYX, EMERALD AND DIAMOND SWAN RING, 1970's in 18ct yellow gold, in crossover design, designed as two swan heads set with fluted onyx, accented by round cut emeralds and round brilliant cut diamonds, inscribed X39 0.82CT, signe

Estimate £8,000 - £12,000

A COLOMBIAN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of 9.32 carats, accented by round brilliant cut diamonds, inscribed E9.372 D0.11, stamped Pt900, size M1/2 / 6.5, 9.9g. Accompanied by a facsimile GIA report stating that the

Estimate £8,000 - £12,000

A RUBY AND DIAMOND CLUSTER RING set with an oval cut ruby of approximately 2.42 carats in a cluster of round brilliant cut diamonds, the diamonds totalling 0.8-1.0 carat, stamped 18CT & PLAT, size O / 7.25, 4.2g. 

Estimate £2,500 - £3,500

CARTIER, AN ENAMEL BOMBE RING the band decorated with green enamel accented by twisted ropework, signed Cartier Italy, indistinct assay marks, size K1/2 / 5.5, 8.9g. 

Estimate £2,000 - £3,000

HOFACKER, A THREE STONE DIAMOND BAND RING the wide band set with three round brilliant cut diamonds, the diamonds totalling 1.6-1.8 carats, signed HOFACKER, stamped PLAT 950, size M1/2 / 6.5, 16.7g. 

Estimate £2,500 - £3,500

A SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of approximately 2.54 carats in a cluster of old cut diamonds, no assay marks, size O / 7.25, 3.3g. 

Estimate £2,500 - £3,500

A CORAL ROSE RING set with coral carved to depict a rose, stamped 750, size P / 7.75, 33.5g. 

Estimate £2,000 - £3,000

A FOILED GREEN BERYL AND DIAMOND CLUSTER RING set with an octagonal step cut foiled green beryl in a cluster of rose cut diamonds, stamped 585, size Q1/2 / 8.5, 16.4g. 

Estimate £3,000 - £5,000

AN ANTIQUE PERIDOT AND DIAMOND CLUSTER RING in yellow gold and silver, set with a round cut peridot of approximately 5.58 carats, in a cluster of old cut diamonds totalling 2.0-2.2 carats, indistinct British hallmarks, size O / 7.25, 6.3g. 

Estimate £4,000 - £6,000

CARTIER, AN AMETHYST, PINK TOURMALINE, TSAVORITE GARNET AND DIAMOND CARESSE D'ORCHIDEES RING in 18ct white gold, designed as a stylised orchid, set with reverse set round cut amethysts, pink tourmalines, tsavorite garnets and pave set with round bril

Estimate £6,000 - £8,000

A COLOMBIAN EMERALD AND DIAMOND RING in 18ct white gold, set with an octagonal step cut emerald of 1.52 carats, within a border of round brilliant and baguette cut diamonds, Swedish assay marks, stamped 18K, size L1/2 / 6, 7.1g. Accompanied by a gemm

Estimate £2,000 - £3,000

A BLACK OPAL AND DIAMOND CLUSTER RING set with an oval cabochon black opal in a cluster of single cut diamonds, stamped 18CT, size J1/2 / 5, 2.9g. 

Estimate £600 - £800

AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with an oval cut sapphire of approximately 2.46 carats, accented on each side by an old cut diamond and rose cut diamonds, stamped 18, size Q1/2 / 8.5, 5.0g. 

Estimate £2,500 - £3,500

A LAPIS LAZULI AND ENAMEL DRESS RING set with a cabochon lapis lazuli carved in fluted design, the band in scalloped design decorated with white enamel, no assay marks, size K1/2 / 5.5, 23.7g. 

Estimate £1,800 - £2,200

A GOLD BOMBE RING in fluted design, stamped K22, size M / 6.25, 14.1g. 

Estimate £1,500 - £2,500

A FIRE OPAL AND DIAMOND CLUSTER RING set with a cushion cut fire opal of approximately 7.18 carats in a cluster of round brilliant cut diamonds, the diamonds totalling 1.2-1.4 carats, stamped 18K, size N / 6.75, 8.3g. 

Estimate £4,000 - £6,000

A BLUE TOPAZ AND DIAMOND RING the circular face set with seven rose cut London blue topaz, accented by round brilliant cut diamonds, stamped 750 925, Italian assay marks, size M1/2 / 6.5, 11.1g. 

Estimate £1,000 - £1,500

A RUBELLITE TOURMALINE AND DIAMOND DRESS RING set with an oval cut rubellite tourmaline of approximately 26.62 carats in a border of round brilliant cut diamonds, the trifurcated shoulders set with further diamonds, the diamonds totalling 1.3-1.5 car

Estimate £7,000 - £9,000

AN EMERALD AND DIAMOND CLUSTER RING set with an octagonal step cut emerald of approximately 1.29 carats in a cluster of round brilliant cut diamonds, inscribed 1.29, stamped PT900, size L1/2 / 6, 5.2g.

Estimate £1,000 - £1,500

A GREEN TOURMALINE AND DIAMOND RING set with an oval cut green tourmaline of approximately 3.79 carats, the shoulders set with clusters of round brilliant cut diamonds, inscribed 3.79 D0.64, stamped Pt900, size L1/2 / 6, 7.7g.

Estimate £800 - £1,200

BULGARI, AN ALVEARE RING in 18ct yellow gold and steel, the crossover ring comprising modular bicolour sections, signed Bvlgari and numbered, stamped 750, size R / 8.5, 15.4g.

Estimate £1,000 - £1,500

AN AQUAMARINE AND DIAMOND DRESS RING set with an octagonal step cut aquamarine of approximately 16.56 carats accented by round brilliant cut diamonds, stamped Pt900, size L1/2 / 6, 16.2g. 

Estimate £2,500 - £3,500

A SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of approximately 3.65 carats, accented on each side by a tapered baguette cut diamond, stamped 10% PLAT, size J / 4.75, 4.7g. Accompanied by a facsimile gemmological report stating the d

Estimate £20,000 - £30,000

A FRENCH CEYLON NO HEAT SAPPHIRE AND DIAMOND DRESS RING in 18ct white gold, set with an oval cut sapphire of approximately 3.36 carats accented by round brilliant and marquise cut diamonds, the diamonds all totalling 1.7-1.9 carats, French assay mark

Estimate £4,000 - £6,000

A RETRO FRENCH DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a cluster of old cut diamonds, within concentric borders of round and old cut diamonds, the diamonds totalling 3.8-4.2 carats, French assay marks, size M1/2 / 6.5, 12.2g. 

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of approximately 3.67 carats, the shoulders set with rows of round brilliant cut diamonds, no assay marks, size L1/2 / 6, 4.9g.

Estimate £4,000 - £6,000

AN EMERALD AND DIAMOND TOI ET MOI RING set with a pear shaped cabochon emerald and a pear cut diamond of approximately 1.51 carats, accented by round brilliant and tapered baguette cut diamonds, stamped 10% IRID PLAT, size J / 4.75, 8.1g. 

Estimate £6,000 - £8,000

A 2.02 CARAT E COLOUR DIAMOND RING set with a round brilliant cut diamond of 2.02 carats, inscribed 'With love, forever Palmi 3. 4. 2006', TRH maker's mark, stamped 585, size K1/2 / 5.5, 14.8g. Accompanied by a gemmological report stating the diamond

Estimate £6,000 - £8,000

A RUBY AND DIAMOND RING set with an oval cut ruby of approximately 1.54 carats, the shoulders set with round brilliant cut diamonds, inscribed 1.543, stamped Pt900, size K1/2 / 5.5, 4.8g. 

Estimate £2,000 - £3,000

A RUBELLITE TOURMALINE AND DIAMOND DRESS RING set with a fancy step cut rubellite tourmaline of approximately 3.58 carats, accented by round brilliant cut diamonds, inscribed 3.58 D0.25, stamped Pt900, size L1/2 / 6, 12.2g. 

Estimate £1,500 - £2,500

BULGARI, AN AMETHYST RING set with an oval cut amethyst, signed Bvlgari, Italian assay marks, stamped 750, size L / 5.75, 9.1g.

Estimate £800 - £1,200

AN UNHEATED SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of approximately 5.24 carats in a cluster of round brilliant cut diamonds, the diamonds totalling 1.2-1.3 carats, no assay marks, size N1/2 / 7, 5.7g. Accompanied by a facsim

Estimate £2,500 - £3,500

A PARAIBA TOURMALINE AND DIAMOND RING set with an oval cut paraiba tourmaline in a cluster of round brilliant cut diamonds, the shoulders set with further diamonds, inscribed 0.08 0.14, stamped K18WG, size N / 6.75, 2.0g. 

Estimate £500 - £700

BULGARI, A MOTHER OF PEARL AND DIAMOND ILLUSION RING in 18ct white gold, set with a slice of mother of pearl, accented by curved sections pave set with round brilliant cut diamonds, signed Bulgari, Italian assay marks, stamped 750, size M / 6.25, 11.

Estimate £3,000 - £5,000

BULGARI, A TRONCHETTO RING the domed white gold ring with a central section of yellow gold, signed Bvlgari, Italian assay marks, stamped 750, size L1/2 / 6, 11.0g.

Estimate £1,200 - £1,600

SALAVETTI, AN UNHEATED PINK SAPPHIRE AND DIAMOND RING set with a cushion cut pink sapphire of 2.86 carats, accented on each side by trios of rose cut diamonds, signed Salavetti, stamped 750, size N1/2 / 7, 6.3g. Accompanied by a facsimile GIA report

Estimate £15,000 - £20,000

AN AQUAMARINE AND DIAMOND BALLERINA RING set with a round cut aquamarine of approximately 3.40 carats in an undulating border of tapered baguette cut diamonds, the diamonds totalling 1.2-1.4 carats, NET maker's mark, stamped 14K, size K1/2 / 5.5, 9.3

Estimate £1,200 - £1,600

PALOMA PICASSO FOR TIFFANY & CO., AN ORANGE TOPAZ RING set with a rectangular step cut orange topaz accented on each side by a square step cut orange topaz, signed Paloma Picasso, signed Tiffany & Co. 1980, stamped 18K, size J1/2 / 5, 8.2g. 

Estimate £1,200 - £1,600

A JADEITE JADE, DIAMOND AND ENAMEL DRESS RING set with two pieces of jadeite jade carved to depict flowers, accented by an old cut diamond, within a border of blue enamel, stamped 14K, size K / 5.25, 7.5g. 

Estimate £600 - £800

CARTIER, A DIAMOND JENTON SAUVAGE RING in 18ct white gold, the circular domed face pave set throughout with round brilliant cut diamonds all totalling 3.17 carats, inscribed 3.173, signed Cartier and numbered, French assay marks, size J1/2 / 5, 21.5g

Estimate £10,000 - £15,000

LOT WITHDRAWN.

Estimate £7,000 - £9,000

A FRENCH PINK SAPPHIRE RING in 18ct yellow gold, set with an oval cut pink sapphire of approximately 1.59 carats, French assay marks, size J1/2 / 5, 7.4g. 

Estimate £800 - £1,200

A DIAMOND AND YELLOW SAPPHIRE SNAKE RING designed as a coiled snake set throughout with round brilliant cut diamonds, the eyes set with round cut blue sapphires, accented by a row of French cut yellow sapphires, inscribed d1.72ct 0.894, stamped Au750

Estimate £4,000 - £6,000

A SAPPHIRE AND DIAMOND HEART DRESS RING set with a heart cut diamond of approximately 0.80 carats and heart cut sapphire of approximately 1.16 carats, accented by round brilliant and tapered baguette cut diamonds, the diamonds totalling 2.4-2.6 carat

Estimate £4,000 - £6,000

A FRENCH COLOMBIAN MINOR EMERALD AND DIAMOND RING in 18ct white gold, set with a rectangular step cut emerald of approximately 8.50 carats, the shoulders set with tapered baguette cut diamonds, French assay marks, size L / 5.75, 5.7g. Accompanied by

Estimate £20,000 - £30,000

A CEYLON NO HEAT COLOUR CHANGE SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of 7.99 carats in a cluster of round brilliant cut diamonds, stamped 18K, size M / 6.25, 7.7g. Accompanied by a facsimile GIA report stating that the sapph

Estimate £15,000 - £20,000

A SAPPHIRE AND DIAMOND DRESS RING designed as two interlocking hoops, one set with round cut sapphires and the other set with tapered baguette cut diamonds, stamped IRID PLAT, size K1/2 / 5.5, 7.4g. 

Estimate £3,000 - £5,000

AN ITALIAN DIAMOND LOVE RING designed as the word LOVE, the O set with round brilliant cut diamonds, stamped K18 Italy, size N / 6.75, 11.1g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND FULL ETERNITY RING set all around with trios of French cut emeralds and round brilliant cut diamonds, the emeralds totalling 0.6-0.7 carats, the diamonds totalling 0.5-0.6 carats, stamped PLAT, size M / 6.25, 5.3g. 

Estimate £1,000 - £1,500

CARTIER, A DIAMOND DRESS RING in 18ct white gold, the undulating ring pave set to one half with round brilliant cut diamonds, the diamonds all totalling 4.8-5.0 carats, signed Cartier and numbered, French assay marks, size J1/2 / 5, 16.5g. 

Estimate £12,000 - £16,000

A COLOMBIAN EMERALD AND DIAMOND DRESS RING set with an octagonal step cut emerald of 3.00 carats in a stylised cluster of round brilliant and tapered baguette cut diamonds, inscribed E3.00 D0.86ct, stamped PT900, size M / 6.25, 9.3g. Accompanied by a

Estimate £4,000 - £6,000

AN AQUAMARINE AND DIAMOND DRESS RING set with an octagonal step cut aquamarine of approximately 9.93 carats in a border of round brilliant cut diamonds, the shoulders and band set with further diamonds, stamped 18K, size N / 6.75, 8.0g. 

Estimate £2,000 - £3,000

OSCAR HEYMAN, A SAPPHIRE AND DIAMOND DRESS RING in checkerboard design, comprising three rows of alternating square step cut sapphires and octagonal step cut diamonds, Oscar Heyman maker's mark and numbered, stamped 18K PLAT, size K / 5.25, 9.2g. 

Estimate £2,000 - £3,000

MARIO BUCCELLATI, A FINE DIAMOND AND PEARL RING set with a pearl of 10.1mm between two old cushion cut diamonds, accented by a border of round brilliant cut diamonds, the principal diamonds weighing approximately 1.69 and 1.45 carats respectively, si

Estimate £25,000 - £35,000

A GARNET AND DIAMOND CLUSTER RING set with an octagonal step cut garnet of approximately 9.31 carats in a cluster of round brilliant cut diamonds, further diamonds set to the shoulders, the diamonds totalling 0.7-0.8 carats, stamped 18K, size M1/2 /

Estimate £2,000 - £3,000

A GREEN TOURMALINE AND DIAMOND RING set with an oval cut green tourmaline of 5.84 carats in a stylised border set with round cut diamonds, inscribed 5.84 D0.25, stamped Pt900 K18, size L / 5.75, 12.3g. 

Estimate £1,500 - £2,500

A RUBELLITE TOURMALINE AND DIAMOND DRESS RING set with an oval cut rubellite tourmaline with a polished crown, the shoulders accented by marquise and round brilliant cut diamonds, inscribed 3.42 0.57, stamped PT900, size L / 5.75, 8.5g. 

Estimate £1,000 - £1,500

A PLATINUM WEDDING BAND RING of plain design, stamped PLAT, size T / 9.75, 13.4g. 

Estimate £800 - £1,200

A RUBY AND DIAMOND CLUSTER RING set with three oval cut rubies in a cluster of round brilliant cut diamonds, inscribed 1.76 0.45, stamped K18, size N / 6.75, 4.4g. 

Estimate £1,200 - £1,600

HERMES, A GOLD BAND RING in 18ct white gold, the band engraved with H motifs, signed Hermes and numbered, French import marks, stamped 750, size N / 6.75, 7.7g. 

Estimate £800 - £1,200

A TSAVORITE GARNET AND DIAMOND THREE STONE RING set with an oval cut tsavorite garnet of approximately 1.18 carats, accented on each side by an oval cut diamond, stamped 18K, size M / 6.25, 3.2g. 

Estimate £1,200 - £1,600

OSCAR HEYMAN & BROTHERS, A RUBY, SAPPHIRE AND DIAMOND CROSSOVER RING set with clusters of calibre cut rubies and sapphires, accented by round brilliant cut diamonds, Oscar Heyman & Brothers maker's mark and numbered, stamped 18K, size M / 6.25, 11.0g

Estimate £6,000 - £8,000

A SAPPHIRE AND DIAMOND DRESS RING set with an oval cut sapphire of approximately 1.73 carats, accented by calibre cut sapphires and round brilliant cut diamonds, no assay marks, size N / 6.75, 6.0g. 

Estimate £2,000 - £3,000

A WATERMELON TOURMALINE AND DIAMOND DRESS RING set with an octagonal step cut watermelon tourmaline of approximately 9.84 carats in a border of round brilliant cut diamonds, the shoulders set with further diamonds, stamped 18K, size N1/2 / 7, 7.2g 

Estimate £2,000 - £3,000

BULGARI, A DIAMOND AND RUBY NATURALIA FISH RING designed as a tropical fish set with round brilliant cut diamonds and a ruby eye, accented by spiga motifs, signed Bvlgari, Italian assay marks, size L1/2 / 6, 8.2g. 

Estimate £1,200 - £1,600

A DEMANTOID GARNET AND DIAMOND RING set with a round cut demantoid garnet of 0.49 carats accented by round brilliant cut diamonds, inscribed 0.49 0.32, stamped Pt950, size K1/2 / 5.5, 3.9g. 

Estimate £1,500 - £2,500

AN EMERALD AND DIAMOND CLUSTER RING set with an oval cut emerald of approximately 1.91 carats in a cluster of round brilliant cut diamonds, stamped 14K, size L1/2 / 6, 5.5g. 

Estimate £2,500 - £3,500

AN ANTIQUE SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of approximately 0.97 carats in a border of old and rose cut diamonds, no assay marks, size M1/2 / 6.5, 2.1g. 

Estimate £2,500 - £3,500

A CITRINE AND DIAMOND RING set with an oval cut citrine of approximately 2.30 carats in a border of round brilliant cut diamonds, further diamonds set to the shoulders, stamped K18, size K1/2 / 5.5, 7.0g. 

Estimate £600 - £800

AN AUSTRIAN PEARL RING the band ring accented by two pearls, maker's mark, stamped 950, Austrian assay mark, size L1/2 / 6, 10.7g. 

Estimate £500 - £700