CARTIER, A DIAMOND LOVE RING in 18ct rose gold, the band pave set throughout with round brilliant cut diamonds, punctuated by six screw motifs, signed Cartier and numbered, stamped 750, size O / 7.25, 7.2g. Current retail price: £9,850. Accompanied b

Estimate £1,500 - £2,500

A G COLOUR DIAMOND ENGAGEMENT RING in platinum, set with an emerald cut diamond of 2.07 carats flanked by two trillion cut diamonds, full British hallmarks, size L / 5.75, 5.5g. Accompanied by a GIA report stating the diamond is G colour and VS1 clar

Estimate £10,000 - £15,000

BULGARI, A FINE EMERALD AND DIAMOND RING, 1960 in 18ct yellow gold, set with a cabochon emerald of 3.37 carats, the shoulders accented by round brilliant cut diamonds, signed Bulgari c1960, stamped 750, inscribed 3.37cts, size N1/2 / 7, 9.7g. 

Estimate £12,000 - £16,000

A TSAVORITE GARNET AND DIAMOND RING in 18ct white gold, set with a cushion cut tsavorite garnet of 4.03 carats, the trifurcated band set throughout with round brilliant cut diamonds all totalling approximately 1.0 carat, no assay marks, size L1/2 / 6

Estimate £4,000 - £6,000

SOLANGE AZAGURY-PARTRIDGE, A REAL FAKE BLUE RING in 18ct white gold, designed as a cut gemstone relieved in blue plique a jour enamel, SA-P maker's mark, full British hallmarks, size J1/2 / 5, 7.1g. 

Estimate £800 - £1,200

BULGARI, AN IMPORTANT STAR SAPPHIRE AND DIAMOND RING in platinum, set with a cabochon star sapphire of approximately 67.71 carats in a border of round brilliant, baguette and trapezoid diamonds, the diamonds all totalling 3.0-3.5 carats, signed Bulga

Estimate £60,000 - £80,000

A FINE ART DECO DIAMOND AND SAPPHIRE RING in platinum, set with a square step cut diamond of approximately 3.40 carats, flanked by two pairs of square step cut sapphires, the stylised mount set throughout with old cut and single cut diamonds, accente

Estimate £20,000 - £30,000

AN IMPORTANT 8.18 CARAT BURMA NO HEAT RUBY AND DIAMOND RING in platinum, set with a cushion cut ruby of 8.18 carats in a border of round brilliant and pear cut diamonds, the diamonds all totalling 1.3-1.6 carats, stamped PLAT, size L / 5.75, 10.1g. A

Estimate £100,000 - £150,000

A 4.50 CARAT BURMA NO HEAT SAPPHIRE AND DIAMOND RING in 18ct white gold, set with an oval cut sapphire of 4.50 carats in a stylised cluster of round brilliant and tapered baguette cut diamonds, Birmingham import mark, size O / 7.25, 9.1g. Accompanied

Estimate £8,000 - £12,000

A FINE BRAZILLIAN ALEXANDRITE AND DIAMOND RING in platinum, set with an oval cut alexandrite of 2.09 carats accented by pear cut diamonds, the diamonds all totalling 1.05 carats, inscribed 2.09 D1.05, stamped PT900, size L / 5.75, 5.6g. Accopmanied b

Estimate £25,000 - £35,000

A 6.31 CARAT SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a round brilliant cut diamond of 6.31 carats, stamped 18CT, size N / 6.75, 7.4g. 

Estimate £15,000 - £20,000

AN IMPORTANT 10.27 CARAT SOLITAIRE DIAMOND RING in platinum, set with an Asscher cut diamond of 10.27 carats, flanked by two tapered baguette cut diamonds, full British hallmarks, size M1/2 / 6.5, 10.4g. 

Estimate £100,000 - £150,000

A DIAMOND FULL ETERNITY RING in 18ct white gold, set with a row of emerald cut diamonds, the diamonds totalling 4.4-4.6 carats, no assay marks, size K1/2 / 5.5, 4.0g. 

Estimate £3,000 - £5,000

AN IMPORTANT FANCY VIVID YELLOW DIAMOND RING in platinum and 18ct yellow gold, set with a cushion cut yellow diamond of 12.26 carats, flanked by two trapezoid cut diamonds both totalling 1.46 carats, sizing band, size K / 5.25, 10.1g. Accompanied by

Estimate £300,000 - £500,000

BULGARI, A PINK TOURMALINE RING in 18ct yellow gold, set with an oval cut pink tourmaline of approximately 2.15 carats, signed Bulgari and numbered, stamped 750, size K / 5.25, 14.8g. 

Estimate £2,500 - £3,500

A FINE COLOMBIAN EMERALD AND DIAMOND RING in 18ct yellow gold, set with an octagonal step cut emerald of approximately 15.58 carats in a cluster of round brilliant cut diamonds, the shoulders set with further diamonds, the diamonds all totalling 2.4-

Estimate £50,000 - £70,000

A 2.11 CARAT SOLITAIRE DIAMOND RING in 18ct white gold, set with an emerald cut diamond of 2.11 carats in a flush set octagonal mount with a satin finish, stamped 18K, size P / 7.75, 11.1g. Accompanied by a gemmological report from the GIA stating th

Estimate £8,000 - £12,000

CARTIER, A RUBY STELLA BAND RING in 18ct yellow gold, set with five round cut rubies, signed Cartier and numbered, French assay marks, size G1/2 / 3.5, 4.3g. 

Estimate £1,000 - £1,500

A BURMESE RUBY AND DIAMOND THREE STONE RING in platinum, set with an octagonal step cut ruby of 3.04 carats, flanked by two trapezoid cut diamonds both totalling 0.68 carats, stamped PLAT, size M1/2 / 6.5, 5.1g.         

Estimate £6,000 - £8,000

CARTIER, A CITRINE AND DIAMOND RING, CIRCA 1940 in 18ct yellow gold, set with an oval cut citrine of approximately 10.07 carats accented by round brilliant cut diamonds, signed Cartier Paris, French assay marks, size M1/2 / 6.5, 8.7g. 

Estimate £15,000 - £20,000

AN IMPORTANT NATURAL FANCY VIVID PINK DIAMOND AND DIAMOND CLUSTER RING in platinum and 18ct rose gold, set with a radiant cut pink diamond of 0.95 in a cluster of round brilliant cut diamonds, the band pave set with further diamonds, the white diamon

Estimate £100,000 - £150,000

A VERY FINE RUBELLITE TOURMALINE AND DIAMOND RING in 18ct rose gold, set with an octagonal step cut rubellite tourmaline of approximately 20.32 carats, in a border of round brilliant cut diamonds, the gallery and band set throughout with round brilli

Estimate £15,000 - £20,000

A FINE UNHEATED 4.65 CARAT RUBY AND DIAMOND RING in platinum, set with an oval cut ruby of 4.65 carats, the shoulders set with single cut diamonds, partial British hallmarks, size P1/2 / 8, 4.5g. Accompanied by a gemmological report card stating that

Estimate £40,000 - £60,000

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, AN EMERALD AND DIAMOND RING in 18ct yellow and white gold, set with a cabochon emerald over a fluted gold section, accented by two round brilliant cut diamonds, signed Bvlgari, stamped 750, size Q / 8, 14.3g. 

Estimate £3,500 - £4,500

A 3.08 CARAT BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut ruby of 3.08 carats in a border of single cut diamonds, French assay marks, size R / 8.75, 3.6g. With a gemmological verbal assessment stating that the

Estimate £18,000 - £22,000

CHOPARD, A DIAMOND HAPPY SPIRIT RING in 18ct yellow gold, the circular face comprising a white sapphire locket containing two circular gold discs and a free moving round brilliant cut diamond, inscribed HAPPY SPIRIT, signed Chopard and numbered, stam

Estimate £1,200 - £1,600

A MUGHAL CARVED PINK SPINEL RING in yellow gold, set with a spinel carved to depict a flower, no assay marks, size M / 6.25, 10.5g. 

Estimate £3,000 - £5,000

A CEYLON NO HEAT COLOUR CHANGE SAPPHIRE AND DIAMOND RING in 14ct rose gold, set with a round cut colour change sapphire of 12.38 carats, the mount set with round brilliant cut diamonds, stamped 585, size M / 6.25, 7.4g. Accompanied by a gemological r

Estimate £12,000 - £18,000

A BLACK OPAL AND DIAMOND RING in yellow gold, set with a pear shaped cabochon black opal of 6.18 carats in a border of rose cut diamonds, the shoulders in foliate design, marked indistinctly, size N / 6.75, 7.1g.

Estimate £2,000 - £3,000

AN IMPORTANT 22.60 CARAT CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in platinum, set with a cushion cut sapphire of 22.60 carats, flanked by two tapered baguette cut diamonds both totalling 0.60 carats, stamped 10% IRID PLAT, size M / 6.25, 11.3g. Acco

Estimate £100,000 - £150,000

A FINE COLOMBIAN EMERALD AND DIAMOND RING in 18ct white gold, set with an octagonal step cut emerald of 6.47 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 2.40 carats, no assay marks, sizing beads, size Q / 8, 11.6g.

Estimate £40,000 - £60,000

AN UNHEATED SAPPHIRE AND DIAMOND RING in 14ct white gold, set with a cushion cut sapphire of approximately 4.50 carats in a border of round brilliant cut diamonds, the diamonds all totalling 1.2-1.6 carats, stamped 585, size S1/2 / 9.5, 5.5g. With a

Estimate £8,000 - £12,000

A 5.53 CARAT SOLITAIRE DIAMOND RING in platinum, set with a marquise cut diamond of 5.53 carats, flanked by two tapered baguette cut diamonds, stamped 90% IRID PLAT, size M / 6.25, 6.7g. 

Estimate £30,000 - £50,000

BULGARI, A SAPPHIRE AND DIAMOND SERPENTI RING in 18ct white gold, designed as a coiled snake set with round brilliant cut diamonds, the eyes set with pear cut sapphires, signed Bulgari and numbered, stamped Au750, size N / 6.75, 8.4g. 

Estimate £5,000 - £7,000

A 10.21 CARAT CEYLON NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a cushion cut sapphire of 10.21 carats in a cluster of round brilliant cut diamonds, no assay marks, size L / 5.75, 7.4g. With a gemmological verbal assessme

Estimate £25,000 - £35,000

A BURMA NO HEAT RUBY AND DIAMOND RING in 18ct white gold, set with an oval cut ruby of 1.08 carats in a border of round brilliant cut diamonds, the band set with further diamonds, partial British hallmarks, size L1/2 / 6, 4.2g. Accompanied by a gemmo

Estimate £3,000 - £5,000

A RUBY AND DIAMOND TARGET RING in 14ct white gold, set with an old cut diamond of approximately 1.80 carats in a surround of calibre cut rubies, the shoulders set with further calibre cut rubies and round brilliant cut diamonds, stamped 14K, French a

Estimate £4,000 - £6,000

CARTIER, AN IMPORTANT CEYLON NO HEAT SAPPHIRE AND DIAMOND DRESS RING in platinum, set with a cushion cut sapphire of approximately 34.00 carats in a border of round brilliant and carre cut diamonds, signed Cartier, French assay marks, sizing band, si

Estimate £400,000 - £600,000

A SPINEL RING in rose gold, set with an oval cut spinel of approximately 3.50 carats, no assay marks, size M / 6.25, 4.5g. 

Estimate £3,000 - £5,000

A 3.00 CARAT FANCY BROWNISH YELLOW DIAMOND CLUSTER RING in 18ct yellow gold, set with a 3.00 carat old mine cut diamond in a border of old cut diamonds, with further diamonds set to the band, stamped 750, size O / 7.25, 6.2g. Accompanied by a facsimi

Estimate £9,000 - £12,000

A FANCY PURPLISH PINK DIAMOND FLOWER RING in 18ct white gold, set with a fancy purplish pink cushion cut diamond of 1.05 carats, the petals pave set with round cut diamonds, no assay marks, size M1/2 / 6.5, 7.0g. Accompanied by a facsimile GIA report

Estimate £15,000 - £20,000

A RUBELLITE TOURMALINE AND DIAMOND RING in platinum, set with an oval cut rubellite tourmaline of 15.93 carats in a border of tapered baguette and round brilliant cut diamonds, the diamonds all totalling 1.68 carats, inscribed 15.93 D1.68, stamped Pt

Estimate £5,000 - £7,000

A 8.20 CARAT BURMA NO HEAT SAPPHIRE AND DIAMOND RING in platinum, set with a round sapphire of 8.20 carats, the shoulders set with baguette, single and triangular step cut diamonds, stamped .900 PLAT, size O / 7.25, 7.0g. With a gemmological verbal a

Estimate £20,000 - £30,000

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

A FINE SAPPHIRE AND DIAMOND RING in platinum, set with a sugarloaf cabochon sapphire of approximately 35.00 carats, the shoulders set with French cut diamonds, engraved with an inventory number, no assay marks, size L / 5.75, 12.1g. 

Estimate £20,000 - £30,000

A VERY FINE BURMA NO HEAT RUBY AND DIAMOND CLUSTER RING in yellow gold, set with a cushion cut ruby of 2.30 carats in a border of old cut diamonds, the diamonds all totalling 1.2-1.5 carats, no assay marks, size N1/2 / 7, 4.3g. Accompanied by a facsi

Estimate £25,000 - £35,000

A FANCY GREEN AND PINK DIAMOND DRESS RING in 18ct white gold, set with a cushion cut green diamond of 1.25 carats in a border of round brilliant cut pink diamonds, surrounded by round brilliant cut diamonds, further round brilliant cut diamonds set t

Estimate £10,000 - £15,000

A TANZANITE, PINK SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with a cabochon tanzanite of approximately 35.50 carats, in a border of alternating oval cut pink sapphires and round brilliant cut diamonds, the sapphires totalling 4.4-4.6 carats,

Estimate £4,000 - £6,000

CHAUMET, A SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut sapphire of approximately 3.80 carats in a border of round brilliant cut diamonds, signed Chaumet, no assay marks, size M1/2 / 6.5, 7.1g. 

Estimate £5,000 - £7,000

A BURMA NO HEAT RUBY AND DIAMOND RING in 18ct white gold, set with a cushion cut ruby of 2.00 carats in a border of round brilliant cut diamonds, the bifurcated band set with further diamonds, partial British hallmarks, size L / 5.75, 4.7g. Accompani

Estimate £15,000 - £25,000

A RUBY AND DIAMOND CLUSTER RING in 18ct white gold, set with an oval cut ruby of approximately 3.00 carats in a border of round brilliant cut diamonds, the shoulders set with further round brilliant cut diamonds, the diamonds all totalling 1.0-1.2 ca

Estimate £8,000 - £12,000

AN IMPORTANT FANCY PURPLISH PINK DIAMOND RING in platinum and 18ct white gold, set with an oval cut fancy purplish pink diamond of 1.67 carats, in a border of round brilliant cut pink diamonds, the band set with round brilliant cut diamonds, stamped

Estimate £80,000 - £120,000

REPOSSI, AN IMPORTANT PIGEON'S BLOOD BURMA NO HEAT RUBY AND DIAMOND DRESS RING in 18ct white gold, set with three oval cut rubies of 2.74, 1.68 and 1.21 carats, accented by round brilliant and pear cut diamonds, in a border of further round brilliant

Estimate £100,000 - £150,000

VAN CLEEF & ARPELS, A DIAMOND FOLIE DES PRES RING in 18ct white gold, in floral design, set throughout with round brilliant, marquise and pear cut diamonds, the diamonds all totalling approximately 4.00 carats, signed Van Cleef & Arpels and numbered,

Estimate £50,000 - £70,000

AN ANTIQUE COLOMBIAN EMERALD AND DIAMOND CLUSTER RING in yellow gold and silver, set with a rectangular step cut emerald in a cluster of rose cut diamonds, no assay marks, size U / 10.25, 7.4g. 

Estimate £20,000 - £30,000

A PINK TOURMALINE, DIAMOND AND RUBY RING in 18ct white gold, set with an oval cut pink tourmaline of approximately 12.80 carats in a stylised mount set with round brilliant cut diamonds and round cut rubies, stamped 750, size M / 6.25, 15.5g. 

Estimate £4,000 - £6,000