TIFFANY & CO., AN ART DECO EMERALD AND DIAMOND DRESS RING in 18ct yellow gold, the rectangular face set to the centre with four rows of old European cut diamonds, in a border of rectangular step cut emeralds and single cut diamonds, the diamonds all

Estimate £5,000 - £7,000

BULGARI, A DIAMOND B.ZERO 1 RING in 18ct white gold, set all around with a single row of round brilliant cut diamonds, with engraved lettering 'BVLGARI' to each side, signed Bvlgari and numbered, stamped 750, size K / 5.25, 6.3g. Current Bulgari reta

Estimate £600 - £800

AN ART DECO SOLITAIRE DIAMOND RING in platinum, set with an old European cut diamond of 4.58 carats, French import mark, size J / 4.75, 3.9g. 

Estimate £18,000 - £22,000

MESSIKA, A SPIKEY ALLIANCE DIAMOND RING in 18ct yellow gold, set with rows of round brilliant cut diamonds accented by gold studs, signed Messika, no assay marks, size N / 6.75, 10.3g. 

Estimate £600 - £800

VAN CLEEF & ARPELS, A VINTAGE CORAL, CHRYSOPRASE AND DIAMOND FLOWER RING in 18ct yellow gold, comprising two carved coral flowers each set to the centre with a round brilliant cut diamond, accented by chrysoprase leaves and further pave set round bri

Estimate £6,000 - £8,000

A CEYLON NO HEAT YELLOW SAPPHIRE AND DIAMOND RING set with an oval mixed cut yellow sapphire of 27.97 carats, the band accented by round brilliant cut diamonds, no assay marks, size N / 6.75, 12.3g. Accompanied by a gemmological report stating that t

Estimate £2,000 - £3,000

A 4.16 CARAT KASHMIR SAPPHIRE GYSPY RING in high carat yellow gold, set with a cabochon Kashmir sapphire of 4.16 carats, no assay marks, size P / 7.75, 12.0g. Accompanied by a gemmological report stating that the sapphire is of Kashmir origin with no

Estimate £15,000 - £25,000

VAN CLEEF AND ARPELS, A VINTAGE CHRYSOPRASE AND DIAMOND PHILIPPINES RING in 18ct yellow gold, set with a central panel of round brilliant cut diamonds, between pieces of polished chrysoprase, signed Van Cleef & Arpels and numbered, French maker's mar

Estimate £2,000 - £3,000

A DIAMOND SWIVEL RING in 18ct rose gold, with an articulated oval plaque pave set with round brilliant cut diamonds, within two oval borders pave set with further round brilliant cut diamonds, the diamonds all totalling 4.5-5.0 carats, stamped 750, s

Estimate £5,000 - £7,000

AN UNHEATED KASHMIR SAPPHIRE AND DIAMOND THREE STONE RING in yellow gold, set with a cushion cut sapphire of 1.45 carats between two old cut diamonds, the diamonds both totalling 0.9-1.0 carat, marked indistinctly, size K / 5.25, 2.8g. Accompanied by

Estimate £20,000 - £30,000

A RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of approximately 1.04 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.1-1.2 carats, Sheffield import marks, size L / 5.75, 5.2g. 

Estimate £2,500 - £3,500

A VINTAGE MOONSTONE AND DIAMOND CLUSTER RING in yellow gold, set with a cabochon moonstone of approximately 13.32 carats in a border of old mine and single cut diamonds, no assay marks, size P / 7.75, 7.1g.

Estimate £1,200 - £1,800

TIFFANY & CO., A VINTAGE SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an old cut diamond of 0.83 carats, signed Tiffany & Co, stamped 18, size K1/2 / 5.5, 2.2g. 

Estimate £1,500 - £2,500

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 3.02 CARAT G COLOUR, VVS2 SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of 3.02 carats, stamped PLATINUM, size O / 7.25, 4.6g. Accompanied by a gemmological report from GIA stating the diamond is of G colour and VVS1 cl

Estimate £40,000 - £50,000

A VINTAGE DIAMOND GYPSY RING in 18ct yellow gold, set with an old cushion cut diamond of 3.94 carats, partial British hallmarks, size Z+1 / 13, 17.0g. 

Estimate £15,000 - £20,000

AN ANTIQUE STAR SAPPHIRE RING in yellow gold, in Byzantine style set with a round cabochon star sapphire, no assay marks, size L1/2 / 6, 8.6g. 

Estimate £2,000 - £3,000

AN ART DECO CEYLON NO HEAT ALEXANDRITE AND DIAMOND RING, CIRCA 1930 in platinum, set with a cushion cut alexandrite of 5.40 carats, the band accented by French cut diamonds, no assay marks, size N / 6.75, 4.3g. Accompanied by a gemmological report st

Estimate £60,000 - £80,000

A COLOMBIAN EMERALD AND DIAMOND RING in 18ct white and yellow gold, set with a cushion cut emerald of 8.17 carats accented on each side by a half moon cut diamond, the diamonds both totalling 2.5-3.0 carats, no assay marks, size J1/2 / 5.5, 9.3g. Acc

Estimate £25,000 - £30,000

A ORANGE CAT'S EYE MOONSTONE AND DIAMOND DRESS RING in titanium, set with an oval cabochon orange cat's eye moonstone of 71.85 carats in a border of round brilliant cut diamonds, a star motif beneath the mount and band set with further round brillian

Estimate £18,000 - £22,000

A 5.00 CARAT DIAMOND AND SAPPHIRE DRESS RING in 18ct white gold, set to the centre with a square emerald cut diamond of 5.00 carats in an oval surround of step cut sapphires, the sapphires all totalling 5.16 carats, in a border of pave set round bril

Estimate £60,000 - £80,000

AN IMPORTANT PIGEON'S BLOOD BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with a cushion cut ruby of 3.14 carats in a cluster of pear cut diamonds all totalling 1.5-1.7 carats, stamped 18K, size K / 5.25, 4.8g. Accompanied by a

Estimate £120,000 - £160,000

CHARLES DE TEMPLE, A VINTAGE OPAL RING in 18ct yellow and white gold, set with an oval cabochon opal in a border of bicolour textured gold, on a textured bicolour gold band, signed C de Temple (partially obscured), stamped 18CT, size M / 6.25, 12.5g.

Estimate £4,000 - £6,000

A FANCY RED DIAMOND FLOWER DRESS RING in 18ct white gold, the articulated ring opening to reveal a radiant cut fancy red diamond of 1.12 within six flower petals pave set with round brilliant cut diamonds, further round brilliant cut diamonds set to

Estimate £50,000 - £70,000

A 2.66 CARAT SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of 2.66 carats between two baguette cut diamonds, no assay marks, size K / 5.25, 4.8g. 

Estimate £8,000 - £12,000

CARTIER, A VINTAGE PINK TOURMALINE RING in 18ct yellow gold, the square shaped band set with an oval cut tourmaline, designed by Jean Dinh Van, signed Cartier, stamped 18K, size J / 4.75, 13.9g. 

Estimate £7,000 - £9,000

BULGARI, A B.ZERO 1 RING in 18ct white gold, the articulated band with engraved lettering 'BVLGARI' to each side, signed Bvlgari and numbered, stamped 750, size J1/2 / 5, 8.2g.

Estimate £300 - £500

A FANCY INTENSE PURPLISH-PINK AND WHITE DIAMOND CLUSTER RING in platinum, set with a cushion cut pink diamond of 1.00 carat in a cluster of round brilliant cut diamonds, the white diamonds all totalling 0.74 carats, no assay marks, size N / 6.75, 5.9

Estimate £12,000 - £16,000

MESSIKA, A DIAMOND DRESS RING in 18ct white gold, set to the centre with an oval cut diamond of approximately 0.30 carats in an openwork surround pave set with round brilliant cut diamonds, signed MESSIKA, stamped 750, size L / 5.75, 10.9g. 

Estimate £600 - £800

GRAFF, AN IMPORTANT 5.05 CARAT G COLOUR, VS1 SOLITAIRE DIAMOND RING in platinum, set with an emerald cut diamond of 5.05 carats between tapered baguette cut diamonds, signed GRAFF, stamped PT 900, size L1/2 / 6, 7.2g. Accompanied by a gemmological re

Estimate £100,000 - £150,000

AN UNHEATED RUBY, ENAMEL, AND DIAMOND DRESS RING in 18ct rose gold, designed as an articulated blue enamel flower opening to reveal an oval cut ruby of 2.80 carats, accented by round brilliant cut diamonds, the articulated trifurcated band set with r

Estimate £30,000 - £50,000

MELLERIO, A DIAMOND BOMBE RING in 18ct yellow gold, set with a round brilliant cut diamond of approximately 2.01 carats on a domed ring pave set with round brilliant cut diamonds, signed Merllerio and numbered, French assay marks, size M / 6.25, 11.8

Estimate £8,000 - £12,000

A 20.14 CARAT DIAMOND BOMBE RING in 18ct white gold, the bomb face pave set with round brilliant cut diamonds, the diamonds all totalling 20.14 carats, inscribed D: 20.14, stamped 750, size K1/2 / 5.5, 37.9g. 

Estimate £25,000 - £35,000

AN UNHEATED SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut sapphire of approximately 3.20 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.5-1.7 carats, stamped 18K, size M / 6.25, 5.6g. Ac

Estimate £4,000 - £6,000

A VINTAGE CITRINE, SAPPHIRE 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 diamonds and ro

Estimate £12,000 - £16,000

CHAUMET, A FINE COLOMBIAN EMERALD AND DIAMOND RING in 18ct yellow gold, the openwork domed body set with an octagonal step cut emerald of 2.57 carats accented by round brilliant cut diamonds, signed Chaumet Paris, no assay marks, size K / 5.25, 8.2g.

Estimate £12,000 - £16,000

A SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct yellow gold, set with a cushion cut diamond of 5.02 carats, British hallmarks for 18ct gold, size M1/2 / 6.5, 5.2g.

Estimate £15,000 - £20,000

VAN CLEEF & ARPELS, A VINTAGE SAPPHIRE AND DIAMOND RING in 18ct yellow gold and platinum, set with a cabochon sapphire of approximately 9.25 carats accented by a scrolling border set with round brilliant cut diamonds, the diamonds all totalling 1.8-2

Estimate £12,000 - £18,000

A VINTAGE DIAMOND BOMBE RING in 18ct yellow gold, the domed textured body set with a cluster of round brilliant cut diamonds, accented by further round brilliant cut diamonds, the diamonds all totalling 2.2-2.4 carats, signed VCA and numbered, full B

Estimate £8,000 - £12,000

AN E COLOUR SOLITAIRE DIAMOND ENGAGEMENT RING in 18 ct white gold, set with a pear cut diamond of 4.03 carats in a border of round brilliant cut diamonds, the band set with further round brilliant cut diamonds, stamped 18K, size P / 7.75, 4.2g. Accom

Estimate £40,000 - £60,000

AN EMERALD AND DIAMOND RING in platinum, set with an octagonal step cut emerald of 4.17 carats in a border of round brilliant cut diamonds, the bifurcated band set with further diamonds, full British hallmarks, size M / 6.25, 9.1g. Accompanied by a g

Estimate £4,000 - £6,000

A FINE UNHEATED SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with a cushion cut sapphire of approximately 13.26 carats in a cluster of pear cut diamonds all totalling 4.5-5.0 carats, stamped 750, size O1/2 / 7.5, 13.5g. 

Estimate £15,000 - £25,000

BULGARI, A B.ZERO 1 DIAMOND RING in 18ct white gold, the articulated ring set with two rows of round brilliant cut diamonds, with engraved lettering 'BVLGARI' to each side, signed BVLGARI, stamped 750, size J / 4.75, 11.1g. 

Estimate £2,500 - £3,500

AN ART DECO DIAMOND DRESS RING in platinum, set with three principal old cut diamonds on a trifurcated band set throughout with round cut diamonds, the diamonds all totalling 1.8-2.0 carats, French import marks, size O1/2 / 7.5, 7.0g. 

Estimate £3,500 - £4,500

A DIAMOND DRESS RING in platinum, set with an old European cut diamond of 3.81 carats in a border of tapered baguette cut diamonds, the band set with round brilliant cut diamonds, the accenting diamonds all totalling 2.26 carats, full British hallmar

Estimate £12,000 - £16,000

A COLOMBIAN EMERALD AND DIAMOND COCKTAIL RING in platinum, set with an octagonal step cut emerald of 27.70 carats within a border of round brilliant cut diamonds, with further diamonds to the gallery and band, the diamonds all totalling 2.5-3.0 carat

Estimate £5,000 - £7,000

A SAPPHIRE AND DIAMOND DRESS RING in platinum, set with a round cut sapphire of approximately 34.11 carats in a border of round brilliant cut diamonds, the mount accented by baguette cut diamonds, on a trifurcated band, French assay marks, size J / 4

Estimate £20,000 - £30,000

A 5.80 CARAT SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 5.80 carats, partial British hallmarks, size L1/2 / 6, 11.3g. 

Estimate £35,000 - £45,000

AN IMPORTANT PIGEON'S BLOOD BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut ruby of 5.03 carats in a cluster of oval cut diamonds all totalling 1.5-1.7 carats, stamped 18K, size M / 6.25, 6.2g. Accompanied by a ge

Estimate £120,000 - £160,000

AN ANTIQUE BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in yellow gold, set with an oval cut ruby of 1.16 carats in a border of old cut diamonds, the diamonds totalling 1.3 - 1.5 carats, no assay marks, size O / 7.25, 4.9g. Accompanied by a gemmologic

Estimate £6,000 - £8,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in 18ct white gold, set with an octagonal step cut sapphire of 10.10 carats between two tapered baguette cut diamonds both totalling 0.66 carats, inscribed D0.66 SP10.10, stamped Au750, size N / 6.75, 7.3g.

Estimate £20,000 - £30,000

A RUBY AND DIAMOND COBRA SNAKE DRESS RING in 18ct white gold, designed as a coiled cobra set throughout with round brilliant cut diamonds and round cut rubies, the rubies all totalling 10.83 carats, the diamonds all totalling 7.80 carats, stamped 750

Estimate £3,000 - £5,000

A RUBY AND SAPPHIRE DRESS RING in 18ct yellow gold, set with a sugarloaf cabochon ruby of approximately 5.38 carats, the band set all around with a row of rectangular step cut sapphires, stamped 750, size I / 4.25, 11.8g. 

Estimate £3,500 - £4,500

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

A 4.01 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct yellow gold, set with a round brilliant cut diamond of 4.01 carats, the band accented by further round brilliant cut diamonds, partial British hallmarks, size M / 6.25, 7.1g. 

Estimate £25,000 - £35,000

A RUBY AND DIAMOND RING in platinum, set with a round cut ruby of approximately 1.90 carats accented by round brilliant, baguette and carre cut diamonds, stamped PLAT, size O / 7.25, 4.5g. 

Estimate £2,500 - £3,500

A DIAMOND AND EMERALD CROCODILE RING in platinum, the ring designed as a crocodile set throughout with round brilliant cut diamonds, the eyes set with round cut emeralds, the diamonds all totalling 5.75 carats, stamped PT950, size U1/2 / 10.6, 40.2g.

Estimate £3,000 - £4,000

AN AMETHYST AND DIAMOND DRESS RING in titanium, set with a cabochon amethyst of 49.77 carats inset with round cut diamonds, inscribed 49.77 d0.18, stamped titanium, size L1/2 / 6, 23.7g. 

Estimate £400 - £600

A FINE BURMA NO HEAT SAPPHIRE AND DIAMOND RING in platinum, set with an octagonal step cut sapphire of 4.22 carats in a border of single cut diamonds, stamped PT950, size J1/2 / 5, 6.3g. Accompanied by. gemmological report from SSEF stating that the

Estimate £25,000 - £35,000

A NATURAL PINK DIAMOND AND WHITE DIAMOND CLUSTER RING in platinum, set with a cushion cut pink diamond of 1.00 carat in a double border of round brilliant cut diamonds, the band accented by further round brilliant cut diamonds, full British hallmarks

Estimate £10,000 - £15,000

MESSIKA, A DIAMOND SNAKE RING in 18ct white gold, designed as a coiled snake pave set with round brilliant cut diamonds, the diamonds all totalling 1.59 carats, inscribed D1.59, signed Messika, French assay marks, stamped 750, size M1/2 / 6.5, 6.8g. 

Estimate £600 - £800

AN ANTIQUE ART DECO DIAMOND AND RUBY TARGET RING in rose gold and platinum, set to the centre with an old European cut diamond of approximately 1.33 carats in a border of undulating French cut rubies, no assay marks, size P1/2 / 8, 4.9g. 

Estimate £6,000 - £8,000

A BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut ruby of 6.02 carats in a stylised cluster of pear and round brilliant cut diamonds, the band set with further round brilliant cut diamonds, the diamonds all totall

Estimate £200,000 - £300,000

AN UNHEATED PINK SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut pink sapphire of 2.53 carats in a cluster of round brilliant cut diamonds, stamped PT900, size L / 5.75, 6.3g. Accompanied by a gemmological report from the GIA stat

Estimate £5,000 - £7,000

A SOLITAIRE DIAMOND RING in 18ct white gold, set with an old European cut diamond of 2.68 carats, stamped 750, L1/2 / 6, 3.4g.

Estimate £10,000 - £15,000

A VINTAGE EMERALD AND DIAMOND RING in yellow gold, set with an octagonal step cut emerald of approximately 5.21 carats, the shoulders set with round brilliant cut diamonds all totalling 0.6-0.8 carats, no assay marks, size J / 4.75, 5.8g.

Estimate £1,500 - £2,500

BOUCHERON, AN ART DECO DIAMOND SET RING MOUNT in platinum, the four claw ring mount with old cut diamond set shoulders, signed Boucheron Paris, French assay marks, size H1/2 / 4, 2.9g. 

Estimate £500 - £700

A 5.28 CARAT SOLITAIRE DIAMOND RING in platinum, set with a round brilliant cut diamond of approximately 5.28 carats, stamped PLAT, size P / 7.5, 6.0g.

Estimate £30,000 - £50,000

AN ANTIQUE GEORGIAN DIAMOND CROWNED HEART RING in yellow gold and silver, set to the centre with a pear shaped rose cut diamond surmounted by a crown accented by rose cut diamonds, no assay marks, size O / 7.25, 3.7g. 

Estimate £5,000 - £7,000

A PINK TOURMALINE RING in 18ct rose gold, set with a sugarloaf cabochon pink tourmaline of 38.33 carats, no assay marks, size M / 6.25, 16.6g. 

Estimate £5,000 - £7,000

A DIAMOND AND PEARL TOI ET MOI RING in platinum, set with an old European cut diamond of 1.17 carats and a pearl of 5.3mm, accented by rows of single cut diamonds, full British hallmarks, size K / 5.25, 3.2g. 

Estimate £1,500 - £2,500