NO RESERVE - A FINE ANTIQUE CEYLON NO HEAT PINK SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut pink sapphire of 4.73 carats in a cluster of old cut diamonds, the diamonds all totalling 3.8-4.0 carats, no assay marks, size L / 5.75, 7.3g. Ac

Estimate £1,000 - £1,500

A PARAIBA TOURMALINE AND DIAMOND RING in platinum, set with a cushion cut paraiba tourmaline of approximately 2.15 carats in a border of round brilliant cut diamonds, inscribed 0.48ct, full British hallmarks, size K1/2 / 5.5, 6.5g. 

Estimate £4,000 - £6,000

A FINE 5.55 CARAT DIAMOND RING set with an emerald cut diamond of approximately 5.55 carats between two trillion cut diamonds, the gallery accented by baguette cut diamonds, the accenting diamonds totalling 1.0-1.2 carats, stamped PLAT, size N1/2 / 7

Estimate £20,000 - £30,000

VAN CLEEF & ARPELS, A NATURAL SALTWATER PEARL AND DIAMOND RING in 18ct white gold, set with a pearl of 6.9mm, accented on each side by round brilliant and marquise cut diamonds, signed Van Cleef, French assay marks, size L / 5.75, 4.2g. With a gemmol

Estimate £2,000 - £3,000

KUTCHINSKY, A FINE AQUAMARINE AND DIAMOND RING set with an octagonal step cut aquamarine of approximately 23.50 carats, accented by a border of round brilliant and baguette cut diamonds, the diamonds all totalling 1.8-2.0 carats, inscribed A23.5, sig

Estimate £4,500 - £5,500

AN IMPORTANT 10.63 CARAT COLOMBIAN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of 10.63 carats, the shoulders set with baguette cut diamonds, no assay marks, size M1/2 / 6.5, 7.5g. Accompanied by a facsimile gemmological report st

Estimate £50,000 - £70,000

A 10.47 CARAT CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with an octagonal step cut sapphire of 10.47 carats between two trillion cut diamonds, inscribed 10.47ct D0.72ct, stamped 18K 750, size P / 7.75, 9.2g. Accompanied by two gemmological reports

Estimate £8,000 - £12,000

AN IMPORTANT BRAZILIAN ALEXANDRITE AND DIAMOND DRESS RING set with an oval cut alexandrite of 1.94 carats, the shoulders set with round brilliant and baguette cut diamonds totalling 1.17 carats, inscribed 1.94 D1.17, stamped Pt900, size L / 5.75, 14.

Estimate £20,000 - £30,000

A 3.01 CARAT D COLOUR DIAMOND HEART RING set with a heart cut diamond of 3.01 carats, the band pave set with round brilliant cut diamonds, stamped PT900, size P / 7.5, 5.7g. Accompanied by a GIA report stating that the diamond is D colour and SI1 cla

Estimate £15,000 - £20,000

A VERY FINE UNHEATED 4.65 CARAT RUBY AND DIAMOND CLUSTER RING set with a cushion cut ruby of 4.65 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.9-2.0 carats, no assay marks, size N1/2 / 7, 6.2g. Accompanied by a fa

Estimate £40,000 - £60,000

A FINE BURMA NO HEAT RUBY AND NATURAL PEARL CLUSTER RING set with an oval cut ruby of approximately 2.60 carats in a cluster of pearls ranging from approximately 5.2-6.2mm, on a bifurcated band, no assay marks, size N1/2 / 7, 14.3g. Accompanied by a

Estimate £25,000 - £30,000

A SAPPHIRE AND DIAMOND DRESS RING set with an octagonal step cut sapphire of approximately 1.58 carats, accented by a row of baguette cut diamonds and pave set round brilliant cut diamonds, stamped 750, size M1/2 / 6.5, 8.6g.

Estimate £3,000 - £5,000

A FANCY COLOUR SAPPHIRE AND DIAMOND COCKTAIL RING set with oval and cushion cut pinkish orange sapphires, the sapphires all totalling 7.0-8.0 carats, accented by two rows of round brilliant cut diamonds, stamped 750, size L / 5.75, 10.2g. 

Estimate £1,000 - £1,500

A CHALCEDONY BOMBE RING comprising a tapering section of chalcedony, set with oval cabochon periwinkle chalcedony, no assay marks, size K1/2 / 5.5, 27.9g. 

Estimate £2,000 - £3,000

BARRY KIESELSTEIN-CORD, A GREEN TOURMALINE RING, 1976 set with an octagonal step cut green tourmaline of approximately 4.00 carats, signed Kieselstein CORD, 1976, stamped 750, size M / 6.25, 12.5g. 

Estimate £1,000 - £1,500

A FINE 18.75 CARAT SAPPHIRE AND DIAMOND THREE STONE RING set with an oval cut sapphire of 18.75 carats between two trillion cut diamonds both totalling 1.65 carats, inscribed S18.75 D1.65, stamped PLAT, size K1/2 / 5.5, 11.3g. 

Estimate £30,000 - £50,000

A FINE 2.04 CARAT BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING set with a cushion cut ruby of 2.04 carats in a cluster of round brilliant cut diamonds, no assay marks, size O1/2 / 7.5, 4.8g. Accompanied by a gemmological report from GRS stating that t

Estimate £10,000 - £15,000

KUTCHINSKY, A VINTAGE RUBY AND DIAMOND BOMBE RING, 1959 in yellow gold, the bombe ring of foliate design, set with a round cabochon ruby, accented by round cut rubies and round brilliant cut diamonds, partially obscured British hallmarks, date letter

Estimate £800 - £1,200

CARTIER, A SMALL MODEL LOVE RING in 18ct yellow gold, the band punctuated by screwhead motifs, signed Cartier and numbered, Swiss assay marks, Cartier size 51, size K1/2 / 5.5, 3.0g. 

Estimate £600 - £800

CARTIER, A DIAMOND, SAPPHIRE AND EMERALD DOVE LES OISEAUX LIBERÉS RING in 18ct white gold, designed as a pair of birds in flight, set with round brilliant cut diamonds and buff top cabochon sapphires, the eyes set with round cut emeralds, signed Cart

Estimate £25,000 - £30,000

A SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with an Asscher cut diamond of approximately 3.19 carats between two tapered baguette cut diamonds, partial British hallmarks, size K1/2 / 5.5, 5.7g. Accompanied by a gemmological report stating th

Estimate £8,000 - £12,000

SALAVETTI, A FINE BURMA NO HEAT RUBY AND DIAMOND RING set with a cushion cut ruby 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 gemmological report stating th

Estimate £5,000 - £7,000

A FINE UNHEATED PADPARADSCHA SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut padparadscha sapphire of 3.05 carats, accented by a cluster of round brilliant cut diamonds, inscribed 3.05 1.08, stamped Pt900, size K / 5.25, 7.6g. Accompanied by a

Estimate £6,000 - £8,000

ALETTO BROTHERS, A FINE CEYLON SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire of approximately 6.75 carats, accented by a cluster of round brilliant cut diamonds totalling 0.7-0.8 carats, signed A. Aletto, stamped PT950, size M1/2

Estimate £10,000 - £15,000

AN ART DECO BURMA NO HEAT STAR RUBY AND DIAMOND DRESS RING set with an oval cabochon star ruby of approximately 6.09 carats, accented by round brilliant, baguette and trapezoid cut diamonds, no assay marks, size J1/2 / 5, 4.5g. Accompanied by a facsi

Estimate £25,000 - £30,000

AN ANTIQUE ART DECO DIAMOND AND SAPPHIRE RING set with an old European cut diamond of approximately 1.50 carats, accented by single cut diamonds and calibre cut sapphires, no assay marks, size P / 7.75, 3.7g. 

Estimate £2,000 - £3,000

AN ART DECO RUBY AND DIAMOND MARQUISE RING set with a round brilliant cut diamond of approximately 1.44 carats, accented by round brilliant cut diamonds and calibre cut rubies, no assay marks, size N1/2 / 7, 4.8g. 

Estimate £4,000 - £6,000

A FINE THREE STONE DIAMOND RING set with three old cut diamonds weighing approximately 3.92 carats, 1.84 carats and 1.69 carats respectively, stamped PLAT, size T / 9.75, 8.9g. 

Estimate £40,000 - £60,000

AN ART DECO BURMA NO HEAT RUBY AND DIAMOND RING set with an oval cut ruby of approximately 2.35 carats in a double halo of old cut diamonds, no assay marks, size J1/2 / 5, 4.3g. Accompanied by a facsimile gemmological report stating the ruby is of Bu

Estimate £15,000 - £20,000

AN UNHEATED KASHMIR SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 1.16 carats, accented by round brilliant and tapered baguette cut diamonds, stamped 18K, size M1/2 / 6.5, 4.3g. Accompanied by a facsimile GIA report stating the sapphire

Estimate £5,000 - £7,000

A FINE 5.42 CARAT UNHEATED RUBY AND DIAMOND CLUSTER RING set with an oval cut ruby of 5.42 carats, accented by a cluster of marquise cut diamonds totalling 2.2-2.5 carats, stamped 750, size O1/2 / 7.5, 6.8g. Accompanied by a facsimile GIA report stat

Estimate £40,000 - £60,000

CARVIN FRENCH, AN EMERALD AND DIAMOND RING in platinum, set with a cabochon emerald of approximately 17.95 carats, the undulating border reverse set with round brilliant cut diamonds, the diamonds totalling 2.5-3.0 carats, Carvin maker's mark, stampe

Estimate £25,000 - £30,000

A FINE 16.44 CARAT INDICOLITE TOURMALINE AND DIAMOND THREE STONE RING set with a cushion cut blue tourmaline of 16.44 carats, the shoulders set with pear cut diamonds totalling 0.86 carats, inscribed 16.44 D0.86, stamped Pt900, size L1/2 / 6, 14.1g. 

Estimate £6,000 - £8,000

A FINE IMPERIAL TOPAZ AND DIAMOND CLUSTER RING set with a cushion cut Imperial topaz of 9.29 carats, accented by a cluster of round brilliant cut diamonds totalling 1.31 carats, inscribed 9.298 1.31, stamped Pt950, size K1/2 / 5.5, 7.2g. 

Estimate £4,000 - £6,000

A BURMA NO HEAT RUBY AND DIAMOND RING in white gold, set with a cushion cut ruby of approximately 3.60 carats accented by round brilliant cut diamonds, the diamonds all totalling 3.0-3.2 carats, marked indistinctly, size G1/2 / 3.5, 10.2g. Accompanie

Estimate £20,000 - £30,000

A FINE 4.24 CARAT COLOMBIAN EMERALD AND DIAMOND THREE STONE  RING set with an octagonal step cut emerald of approximately 4.24 carats, the shoulders set with baguette cut diamonds, inscribed, E4.247 D0.446, stamped Pt900, size K1/2 / 5.5, 6.1g. Accom

Estimate £12,000 - £16,000

BULGARI, A TUBOGAS RING in 18ct yellow gold, the coiled ring of gaspipe design, signed Bulgari, Italian assay marks, stamped 750, size adjustable, 16.4g. 

Estimate £3,500 - £5,500

BOUCHERON, A GOLD WEDDING BAND RING in 18ct yellow gold, of plain design, signed Boucheron, stamped OR 750, size M1/2 / 6.5, 5.7g. 

Estimate £400 - £600

BULGARI, A PINK TOURMALINE, PERIDOT AND PORCELAIN CHANDRA RING in 18ct yellow gold, set with white porcelain moulded in fluted design, accented by cabochon pink tourmaline and peridot, signed Bulgari, maker's mark, Italian assay marks, stamped 750, s

Estimate £2,000 - £3,000

A FRENCH 3.25 CARAT BURMA NO HEAT SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of approximately 3.25 carats, the shoulders set with baguette cut diamonds, French assay marks, size L1/2 / 6, 5.9g. Accompanied by a facsimile gemmological rep

Estimate £8,000 - £12,000

VAN CLEEF & ARPELS, A VINTAGE CORAL RING in 18ct yellow gold, comprising a wide fluted band set with an oval cabochon coral, signed VCA and numbered, French maker's mark, French assay marks, stamped 750, size H / 3.75, 9.0g. 

Estimate £2,000 - £3,000

A RUBELLITE TOURMALINE AND DIAMOND RING in 18ct yellow gold, set with a round cabochon rubellite tourmaline of approximately 5.74 carats, accented by round brilliant cut diamonds, R&G maker's mark, partial British hallmarks, stamped 750, size N / 6.7

Estimate £700 - £900

AN ANTIQUE MUGHAL CARVED EMERALD AND DIAMOND CLUSTER RING in yellow gold and silver, set with a cabochon emerald of approximately 7.16 carats carved to depict a flower, accented by a cluster of old cut diamonds, no assay marks, size N1/2 / 7, 8.1g. 

Estimate £1,500 - £2,500

A STAR SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cabochon star sapphire of approximately 12.96 carats in a cluster of round brilliant cut diamonds, no assay marks, size M / 6.25, 8.5g. 

Estimate £2,500 - £3,500

A FINE CAT'S EYE CHRYSOBERYL AND DIAMOND CLUSTER RING set with a round cabochon cat's eye chrysoberyl of approximately 10.81 carats, accented by a cluster of round brilliant cut diamonds, inscribed 10.81 D0.757, stamped Pt900, size L1/2 / 6, 11.9g. 

Estimate £10,000 - £15,000

VAN CLEEF & ARPELS, A PINK SAPPHIRE DRESS RING in 18ct yellow gold, the stylised bombe ring pave set with round cut pink sapphires, signed VCA and numbered, French assay marks, size J1/2 / 5, 16.2g. 

Estimate £8,000 - £12,000

CARTIER, A LOVE RING in 18ct yellow gold, the band punctuated by screwhead motifs, signed Cartier and numbered, Swiss assay marks, Cartier size 69, size V / 10.5, 6.6g. Accompanied by a Cartier ring box. Please note that this ring has been resized sm

Estimate £600 - £800

A FINE UNHEATED SAPPHIRE AND DIAMOND RING set with a cushion cut sapphire of 4.05 carats between two half moon cut diamonds both totalling 0.55 carats, stamped PLAT, size N / 6.75, 5.5g. Accompanied by a facsimile GIA report stating that the sapphire

Estimate £8,000 - £12,000

A VINTAGE CEYLON NO HEAT SAPPHIRE, CITRINE AND DIAMOND COCKTAIL RING in 18ct yellow gold, set to the centre with an oval cut citrine of approximately 18.38 carats in a border of cushion cut blue sapphires, accented by alternating round brilliant cut

Estimate £10,000 - £15,000

AN EBONY SCREWHEAD DRESS RING the bombe ring formed of polished ebony with an applied screwhead motif, no assay marks, size L1/2 / 6, 12.0g. 

Estimate £400 - £600

BOUCHERON, A ROCK CRYSTAL AND DIAMOND CROSSOVER RING set with two carved rock crystal beads, accented by round brilliant cut diamonds, signed Boucheron and numbered, stamped 750, size M / 6.25, 10.7g. 

Estimate £5,000 - £7,000

A RUBY AND DIAMOND RING, 1979 in 18ct yellow gold, set with a row of square step cut rubies, accented on each side by a row of round brilliant cut diamonds, DJT maker's mark, full British hallmarks for London 1979, size N / 6.75, 5.9g.

Estimate £1,500 - £2,500

CHAUMET, A FINE 4.53 CARAT CEYLON NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING set with an oval cut sapphire of 4.53 carats, accented by a cluster of round brilliant cut diamonds totalling 1.0-1.1 carats, signed Chaumet, no assay marks, size M1/2 / 6.5,

Estimate £12,000 - £16,000

VAN CLEEF & ARPELS, A DIAMOND SWEET ALHAMBRA RING in 18ct white gold, comprising a quatrefoil motif set with round brilliant cut diamonds, accented by a beaded border, signed VCA and numbered, French assay marks, size I / 4.25, 3.2g. 

Estimate £2,500 - £3,500

CARTIER, A FINE EMERALD AND DIAMOND DRESS RING in platinum, set with an oval cabochon emerald of approximately 3.19 carats in a border of old and Peruzzi cut diamonds, the diamonds all totalling 1.5-1.7 carats, signed Cartier, Cartier maker's mark, F

Estimate £10,000 - £15,000

A SAPPHIRE AND DIAMOND DRESS RING set with a pear cut sapphire of approximately 4.60 carats accented by a cluster of round brilliant cut diamonds, the shoulders set with pear cut diamonds accented by further round brilliant cut diamonds, no assay mar

Estimate £8,000 - £12,000

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

Estimate £800 - £1,200

AN EMERALD AND DIAMOND RING set with a rectangular step cut emerald of approximately 7.35 carats, accented by single cut diamonds, no assay marks, sizing band, size F1/2 / 3, 12.8g. 

Estimate £10,000 - £15,000

A CITRINE AND GARNET RING the wide white resin band with an applied flower motif set with a heart cut citrine and marquise cut garnets, no assay marks, size N / 6.75, 5.7g. 

Estimate £300 - £500