A TURQUOISE AND DIAMOND CLUSTER RING set with an oval cabochon turquoise in a cluster of round brilliant cut diamonds, stamped 18K, size K / 5.25, 7.8g. 

Estimate £1,500 - £2,500

SOLANGE AZAGURY-PARTRIDGE, A MOONSTONE AND DIAMOND MOON AND STARS SPINNER RING in 18ct blackened gold, set with a cabochon moonstone in a spinning border of star motifs set with round brilliant cut diamonds, the band and gallery accented by further d

Estimate £3,000 - £5,000

LOT WITHDRAWN.

Estimate £5,000 - £7,000

ALEXIS NY, A DIAMOND, EMERALD AND ENAMEL SNAKE RING comprising a row of articulated links decorated with black enamel, the head and tail set with round brilliant cut diamonds, the eyes set with marquise cut emeralds, inscribed D0.32 EM0.20, signed Al

Estimate £1,500 - £2,500

A YELLOW SAPPHIRE AND DIAMOND RING set with an oval cut yellow sapphire of approximately 10.82 carats, the shoulders set with baguette cut diamonds, stamped PT950, size K1/2 / 5.5, 8.6g. 

Estimate £4,000 - £6,000

A PINK TOPAZ AND DIAMOND RING set with an oval cut pink topaz of approximately 9.78 carats, the shoulders set with old cut diamonds, no assay marks, size N1/2 / 7, 6.0g. 

Estimate £7,000 - £9,000

OSCAR HEYMAN, AN UNTREATED EMERALD AND DIAMOND RING / PENDANT set with an octagonal step cut emerald of 4.71 carats in a cluster of round brilliant cut diamonds and pear cut emeralds, detachable from the ring mount to form a pendant, stamped 18K IRID

Estimate £30,000 - £50,000

A SAPPHIRE AND DIAMOND RING set with a cabochon sapphire of approximately 8.60 carats, accented by single cut diamonds, stamped PLAT, size R1/2 / 9, 7.9g. 

Estimate £5,000 - £7,000

BULGARI, A VINTAGE CORAL, DIAMOND AND ONYX RING in 18ct yellow gold, set with a cabochon coral, the shoulders set with polished onyx and round brilliant cut diamonds, signed BVLGARI, stamped 750, size L / 5.75, 17.7g. 

Estimate £7,000 - £9,000

A 3.85 CARAT CEYLON NO HEAT PADPARADSCHA SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire of 3.85 carats, in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.1-1.2 carats, stamped 585, size T1/2 / 10, 6.2g. Acc

Estimate £15,000 - £25,000

A GREEN TOURMALINE AND TSAVORITE GARNET COCKTAIL RING set with an octagonal step cut green tourmaline accented by pave set round cut tsavorite garnets, stamped 14K, size N / 6.75, 10.2g. 

Estimate £1,200 - £1,600

A SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of approximately 3.35 carats accented on each side by a baguette cut diamond, no assay marks, size O / 7.25, 4.6g. 

Estimate £10,000 - £15,000

AN ANTIQUE DIAMOND DRESS RING the geometric pierced face set with an old European cut diamond of approximately 1.10 carats, accented by old and single cut diamonds, the diamonds all totalling 1.9-2.1 carats, no assay marks, size N / 6.75, 7.1g. 

Estimate £4,000 - £6,000

A BUMBLE BEE RING the tapering band with an applied bumble bee motif, no assay marks, size N / 6.75, 17.3g. 

Estimate £1,800 - £2,200

A SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of approximately 3.40 carats in a border of round brilliant and baguette cut diamonds, stamped 18K, size I / 4.25, 7.0g. 

Estimate £3,000 - £5,000

BULGARI, A B.ZERO 1 RING the band with engraved lettering 'BVLGARI ROMA' to the sides, signed Bulgari and numbered, stamped 750, stamped METAL, size N / 6.75, 8.9g. 

Estimate £1,000 - £1,500

JEAN SCHLUMBERGER FOR TIFFANY & CO., A DIAMOND RING the openwork ring set with round brilliant and marquise cut diamonds, the diamonds all totalling 2.5-2.7 carats, signed Schlumberger Studios, signed Tiffany & Co., stamped 750 PT950, size J1/2 / 5,

Estimate £12,000 - £16,000

A DIAMOND AND ENAMEL PANSY RING set all around with pansy motifs relieved variously in pink, yellow, blue and purple enamel and set to the centre with a round cut diamond, accented by rope work, no assay marks, size J1/2 / 5, 8.6g. 

Estimate £1,800 - £2,200

AN EMERALD AND DIAMOND RING set with a rectangular step cut emerald of approximately 2.00 carats in a border of transitional cut diamonds, no assay marks, size P / 7.75, 5.6g. 

Estimate £3,000 - £5,000

A FINE ANTIQUE AGATE CAMEO RING in yellow gold, set with an agate cameo carved to depict the busts of three Roman emperors, no assay marks, size N / 6.75, 10.0g. 

Estimate £12,000 - £16,000

AN ANTIQUE EGYPTIAN REVIVAL WINGED SCARAB RING in high carat yellow gold, engraved with a winged scarab, inscribed 'John R.. 4th Sept 1885', no assay marks, size N1/2 / 7, 4.4g. 

Estimate £1,500 - £2,500

A CARNELIAN AND DIAMOND INTAGLIO RING set with an oval carnelian intaglio carved to depict a classical figure in a border of round cut diamonds, the mount and band set with further round cut diamonds, stamped PT900, size L1/2 / 6, 5.1g. 

Estimate £2,000 - £3,000

AN ANTIQUE AUSTRIAN BURMA NO HEAT RUBY AND DIAMOND RING in yellow gold, set with a cushion cut ruby of approximately 0.90 carats and an old cut diamond of approximately 0.60 carats, the scrolling shoulders set with further old cut diamonds, Austrian

Estimate £3,000 - £5,000

AN AQUAMARINE AND DIAMOND DRESS RING set with an octagonal step cut aquamarine of approximately 1.53 carats in a border of old cut diamonds, the diamonds all totalling 3.8-4.0 carats, no assay marks, size L / 5.75, 5.8g. 

Estimate £4,500 - £5,500

STERLE, AN IMPORTANT 9.89 CARAT UNTREATED COLOMBIAN EMERALD AND DIAMOND RING in platinum, set with an octagonal step cut emerald of 9.89 carats accented by round brilliant and baguette cut diamonds, Sterle maker's mark, French assay marks, size N1/2

Estimate £100,000 - £150,000

VAN CLEEF & ARPELS, A DIAMOND AND ENAMEL FLOWER RING designed as a flower set with polished onyx and a cluster of round brilliant cut diamonds, signed VCA and numbered, stamped 750, size O1/2 / 7.5, 17.2g. 

Estimate £4,000 - £6,000

AN ANTIQUE BANDED AGATE INTAGLIO RING set with an oval banded agate intaglio carved to depict an eagle's head, on a bifurcated band, no assay marks, size J1/2 / 5, 2.9g. 

Estimate £1,200 - £1,600

BULGARI, A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of approximately 10.68 carats, accented by marquise cut diamonds, signed Bulgari, stamped 750, size K1/2 / 5.5, 14.8g. Accompanied by facsimile gemmological report stat

Estimate £15,000 - £20,000

A 8.85 CARAT BURMA NO HEAT SPINEL AND DIAMOND RING in 18ct yellow gold, set with a cushion cut spinel of 8.85 carats, the band set with a row of round brilliant cut diamonds, full British hallmarks, size N1/2 / 7, 6.0g. Accompanied by a gemmological

Estimate £6,000 - £8,000

DAVID WEBB, A CITRINE AND ENAMEL RING set with a hexagonal cut citrine, the mount relieved in black enamel, sizing band size L1/2 / 6, signed David Webb, stamped 18K, 18.8g. 

Estimate £7,000 - £9,000

A SPINEL AND DIAMOND RING set with a cushion cut spinel of approximately 2.88 carats, accented on each side by baguette cut diamonds, no assay marks, size O1/2 / 7.5, 3.0g. Accompanied by a gemmological report stating the spinel shows no indication o

Estimate £6,000 - £8,000

A DIAMOND HEART DRESS RING in platinum, set with a pear cut diamond in a border of baguette and round brilliant cut diamonds, no assay marks, size J1/2 / 5, 9.4g. 

Estimate £1,200 - £1,600

A 3.98 CARAT CEYLON NO HEAT PADPARADSCHA SAPPHIRE AND DIAMOND CLUSTER RING set with a cushion cut sapphire of 3.98 carats, in a cluster of round brilliant cut diamonds, no assay marks, size I / 4.25, 5.2g. Accompanied by a facsimile gemmological repo

Estimate £10,000 - £15,000

A CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with a cushion cut sapphire of approximately 3.00 carats in a border of round brilliant cut diamonds, stamped PLAT, size K1/2 / 5.5, 4.1g. Accompanied by a gemmological report stating the sapphire is of

Estimate £6,000 - £8,000

A RETRO FRENCH DIAMOND DRESS RING in 18ct white gold, set with a row of five graduating old European cut diamonds accented by single cut diamonds, the diamonds all totalling 2.6-2.8 carats, French assay marks, size K / 5.25, 10.6g. 

Estimate £4,000 - £6,000

MAUBOUSSIN, AN IOLITE AND DIAMOND RING in 18ct white gold, set with a fancy cut iolite accented by sections of pave set round brilliant cut diamonds, signed Mauboussin Paris, French assay mark, size J1/2 / 5, 12.0g. 

Estimate £2,000 - £3,000

DAVID WEBB, A CORAL, DIAMOND AND ONYX RING set with a polished coral accented by polished onyx and round brilliant cut diamonds, signed Webb, stamped 18K PLAT, size K1/2 / 5.5, 21.0g. 

Estimate £12,000 - £16,000

A BURMESE RUBY AND DIAMOND THREE STONE RING in 18ct white gold, set with an octagonal step cut ruby of approximately 1.47 carats accented on each side by a trillion cut diamond, full British hallmarks, size O1/2 / 7.5, 3.6g. 

Estimate £4,000 - £6,000

CARTIER, A FINE EMERALD AND DIAMOND RING in platinum, set with an oval cabochon emerald of approximately 1.95 carats, accented by round brilliant and baguette cut diamonds, the diamonds all totalling 4.0-5.0 carats, signed Cartier and numbered, stamp

Estimate £12,000 - £16,000

A NATURAL FANCY DEEP BROWNISH YELLOW AND WHITE DIAMOND RING set with a cut cornered rectangular modified brilliant cut fancy deep brownish yellow colour diamond in a border of round brilliant cut diamonds, the gallery accented by round brilliant cut

Estimate £7,000 - £9,000

A BLUE AND FANCY ORANGY PINK DIAMOND RING set with a round brilliant cut blue diamond of approximately 1.16 carats between two pear cut fancy orangy pink diamonds of 0.34 and 0.27 carats, the band set with a row of round brilliant cut white diamonds,

Estimate £7,000 - £9,000

A BLUE AND PINK DIAMOND RING set with a heart cut blue diamond of approximately 0.97 carats between two pear cut pink diamonds, the band set with a row of round brilliant cut white diamonds, stamped PT950, size M / 6.25, 4.0g. 

Estimate £7,000 - £9,000

A 4.53 CARAT BURMA NO HEAT RUBY AND DIAMOND RING in 18ct yellow gold, set with a cushion cut ruby of 4.53 carats in a double cluster of round brilliant cut diamonds, the diamonds all totalling 2.2-2.4 carats, full British hallmarks, size P / 7.75, 9.

Estimate £70,000 - £90,000

A 5.76 CARAT DIAMOND SOLITAIRE RING set with an oval cut diamond of 5.76 carats, stamped 750, size U / 10, 6.3g. 

Estimate £25,000 - £35,000

VAN CLEEF & ARPELS, AN ENAMEL BOMBE RING in 18ct yellow gold, the bombe ring accented by dots of blue enamel, signed VCA and numbered, French assay marks, size K1/2 / 5.5, 8.2g. 

Estimate £2,500 - £3,500

A 2.52 CARAT BURMA NO HEAT RUBY AND DIAMOND RING in 18ct white gold, set with an oval cut ruby of 2.52 carats in a double border of round cut diamonds, French assay marks, size O / 7.25, 5.4g. Accompanied by a gemmological report stating that the rub

Estimate £8,000 - £12,000

A NATURAL FANCY ORANGY YELLOW AND WHITE DIAMOND RING set with a round brilliant cut diamond of 1.18 carats in a border or round brilliant cut diamonds, the gallery accented by round brilliant cut white and yellow diamonds, stamped 14K, size M / 6.25,

Estimate £3,000 - £5,000

CARTIER, A DIAMOND LOVE RING punctuated with screw head motifs and set with one round cut diamond, signed Cartier and numbered, stamped 750, size J / 4.75, 4.6g. 

Estimate £650 - £850

ALEXIS NY, A DIAMOND, EMERALD AND ENAMEL SNAKE RING comprising a row of articulated links decorated with turquoise enamel, the head and tail set with round brilliant cut diamonds, the eyes set with marquise cut emeralds, inscribed D0.32 EM0.20, signe

Estimate £800 - £1,200

A 9.27 CARAT ALEXANDRITE AND DIAMOND THREE STONE RING set with a cushion cut alexandrite of 9.27 carats, accented on each side by a fancy shield cut diamond, stamped PLAT, size N / 6.75, 11.3g. Accompanied by a facsimile gemmological report stating t

Estimate £25,000 - £30,000

A FINE 7.12 CARAT CEYLON NO HEAT SAPPHIRE AND DIAMOND RING set with an oval cut sapphire of 7.12 carats in a border of round brilliant cut diamonds, the bifurcated shoulders set with round brilliant and baguette cut diamonds, stamped 18CT 750, size M

Estimate £15,000 - £20,000

A 3.25 CARAT SOLITAIRE DIAMOND RING set with a round brilliant cut diamond of 3.25 carats, the shoulders set with baguette and single cut diamonds, stamped PLATINUM, sizing band stamped 9ct, size R / 8.5, 5.5g. 

Estimate £15,000 - £20,000

A FANCY INTENSE GREENISH YELLOW DIAMOND CROSSOVER RING set with a modified shield mixed cut fancy intense greenish yellow diamond of 0.62 carats and a trillion cut diamond, the band set with princess and step cut diamonds, stamped 14K, size M1/2 / 6.

Estimate £4,000 - £6,000