AN EMERALD INTAGLIO AND DIAMOND RING set with an oval cabochon emerald intaglio carved to depict a classical figure, accented by rose cut diamonds, no assay marks, size I1/2 / 4.5, 8.0g. 

Estimate £2,000 - £3,000

A RUBELLITE TOURMALINE RING set with a cushion cut rubellite tourmaline of approximately 5.84 carats, stamped 18K, size M1/2 / 6.5, 11.8g. 

Estimate £2,500 - £3,500

CARTIER, A DIAMOND AND CERAMIC LOVE RING the band pave set throughout with round brilliant cut diamonds, punctuated by six screw motifs set with ceramic, signed Cartier and numbered, Swiss assay marks, stamped 750, size J / 4.75, 9.4g. 

Estimate £3,500 - £4,500

A COLOMBIAN MINOR EMERALD AND DIAMOND CLUSTER RING set with an octagonal step cut emerald of approximately 21.00 carats in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.7-2.0 carats, SR maker's mark, no assay marks, size M /

Estimate £40,000 - £60,000

AN AQUAMARINE AND DIAMOND RING set with aIAMOND RING set with an octagonal step cut aquamarine of 42.59 carats, the openwork mount in foliate design, accented by round brilliant cut diamonds, signed Sophia D., stamped 750 PLAT, size M / 6.25, 21.9g. 

Estimate £6,000 - £8,000

AN EMERALD RING set with a cushion cut emerald of approximately 3.05 carats, signed Bulgari, no assay marks, size M1/2 / 6.5, 10.

Estimate £6,000 - £8,000

VAN CLEEF & ARPELS, AN ONYX, EMERALD AND DIAMOND SWAN RING 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 X14 0.83CT, signed VCA an

Estimate £7,000 - £9,000

BULGARI, A DIAMOND BAND RING set with two rows of round brilliant and marquise cut diamonds, the diamonds all totalling 8.5-9.0 carats, signed Bulgari, stamped 950, size R1/2 / 9, 10.0g. 

Estimate £12,000 - £16,000

A RUBY AND DIAMOND RING set with a cushion cut ruby and a row of calibre cut rubies, accented by rows of round brilliant cut diamonds, stamped PLAT, size M1/2 / 6.5, 6.1g.  

Estimate £2,000 - £3,000

A YELLOW SAPPHIRE AND DIAMOND RING set with an oval cut 6.19 carats, the openwork tapering set with round brilliant cut diamonds, engraved 6.19 0.29, stamped K18, size Q1/2 / 8.25, 9.6g. 

Estimate £2,000 - £3,000

A RUBELLITE TOURMALINE RING set with an oval cut rubellite tourmaline of approximately 17.64 carats, stamped 18K, size R1/2 / 9, 15.1g. 

Estimate £6,000 - £8,000

MAUBOUSSIN, A DIAMOND CLUSTER RING in platinum, set with a round brilliant cut diamond of approximately 2.91 carats, in a cluster of further round brilliant and baguette cut diamonds, the diamonds all totalling 6.5-7.0 carats, signed Mauboussin and n

Estimate £25,000 - £30,000

A SAPPHIRE AND DIAMOND DRESS RING the rectangular face set with an old cut diamond of approximately 0.82 carats in a border of French cut sapphires, accented by further old cut diamonds, stamped PLAT, size N / 6.75, 5.8g. 

Estimate £3,000 - £5,000

STERLE, A BLACK PEARL AND DIAMOND FLOWER RING designed as a stylised flower set with a black pearl of 8.7mm, accented by round brilliant cut diamonds, on a braided bifurcated band, signed Sterle Paris and numbered, no assay marks, size H1/2 / 4, 8.7g

Estimate £6,000 - £8,000

A SAPPHIRE AND DIAMOND THREE STONE RING set with a cushion cut sapphire of approximately 1.10 carats between two trillion cut diamonds, stamped 18K, size M / 6.25, 3.4g. 

Estimate £1,500 - £2,500

A SET OF THREE DIAMOND STACKING RINGS comprising three undulating tricolour rings accented by round brilliant cut diamonds, no assay marks, size M1/2 / 6.5, 14.9g. 

Estimate £1,000 - £1,500

AN EMERALD RING set with an octagonal step cut emerald of approximately 6.41 carats, stamped 18CT, size N / 6.75, 4.7g. 

Estimate £3,000 - £5,000

CARTIER, A DIAMOND TANK FRANCAISE RING set all around with trios of round brilliant cut diamonds, signed Cartier and numbered, stamped 750, size R1/2 / 9, 11.9g. 

Estimate £1,500 - £2,500

CARTIER, AN AMETHYST AND CITRINE PASHA RING the circular face set with cushion and fancy cut amethysts and cushion cut citrines, signed Cartier and numbered, stamped 750, size J / 4.75, 15.9g. 

Estimate £2,000 - £3,000

A SAPPHIRE AND DIAMOND GYPSY RING set with a round cut sapphire between two round brilliant cut diamonds, the band with a satin finish, stamped 18K, size L / 5.75, 8.2g. 

Estimate £1,500 - £2,500

A DIAMOND RING in 18ct white gold, set with an oval rose cut diamond of 12.2mm in a closed back setting, accented by single cut diamonds, French import marks, size N / 6.75, 8.4g. 

Estimate £4,000 - £6,000

A CEYLON SAPPHIRE, RUBY AND DIAMOND FLOWER RING set with a cushion cut ruby of approximately 2.13 carats in a cluster of cushion cut sapphires, the sapphires all totalling 11.0-12.0 carats, accented by round brilliant cut diamonds, no assay marks, si

Estimate £12,000 - £16,000

A RUBY AND DIAMOND RING set with a marquise cut ruby of approximately 2.15 carats in a cluster of marquise and pear cut diamonds, the diamonds all totalling 1.6-1.8 carats, stamped 18K, size L1/2 / 6, 8.5g. 

Estimate £5,000 - £7,000

A TURQUOISE, CORAL AND DIAMOND RING set with a carved cabochon turquoise between two carved cabochon corals, accented by round brilliant cut diamonds, stamped K18, size M1/2 / 6.5, 15.4g. 

Estimate £800 - £1,200

A SAPPHIRE AND DIAMOND DRESS RING set with a baguette cut diamond in a border of French cut sapphires and old cut diamonds, further old cut diamonds set to the shoulders, no assay marks, size O1/2 / 7.5, 5.9g. 

Estimate £3,000 - £5,000

AN EMERALD AND DIAMOND RING set with an octagonal step cut emerald of approximately 5.96 carats in a border of old cut diamonds, no assay marks, size Q / 8.25, 5.9g. 

Estimate £2,000 - £3,000

AN AQUAMARINE AND DIAMOND DRESS RING set with an octagonal step cut aquamarine of approximately 18.81 carats in a border of round brilliant cut diamonds, accented by a rope work border set with marquise cut diamonds, no assay marks, size L1/2 / 6, 21

Estimate £6,000 - £8,000

AN EMERALD AND DIAMOND CLUSTER RING set with an oval cabochon emerald of approximately 4.91 carats in a cluster of round brilliant and baguette cut diamonds, inscribed 0.69 0.66, stamped Pt900, size N / 6.75, 12.0g. 

Estimate £1,500 - £2,500

BUCCELLATI, A RUBY AND DIAMOND CLUSTER RING set with a cushion cut ruby of approximately 3.11 carats, in a cluster of round brilliant cut diamonds, the diamonds all totalling 1.6-1.9 carats, signed M. Buccellati, stamped 750, size R1/2 / 9, 6.8g. 

Estimate £10,000 - £15,000

A RETRO DIAMOND RING comprising a central section set with baguette and trapezoid cut diamonds, accented by sections of round brilliant cut diamonds, no assay marks, size N1/2 / 7, 18.6g. 

Estimate £5,000 - £7,000

A BURMESE RUBY AND DIAMOND BOMBE RING the bombe face set with an oval cut ruby of approximately 1.80 carats accented by round brilliant cut diamonds, no assay marks, sizing band, size J1/2 / 5, 10.6g. 

Estimate £4,500 - £5,500

A RUBY AND DIAMOND THREE STONE RING set with a cabochon ruby between two round brilliant cut diamonds, stamped 18K, size M / 6.25, 6.4g. 

Estimate £1,500 - £2,500

A SAPPHIRE AND DIAMOND RING set with an octagonal step cut sapphire of approximately 2.72 carats, the shoulders set with round brilliant and baguette cut diamonds, stamped 14K, size N / 6.75, 3.7g. 

Estimate £600 - £800

A FRENCH PERIDOT RING in 18ct yellow gold, set with a cushion cut peridot, French assay marks, size M / 6.25, 8.8g. 

Estimate £1,000 - £1,500

A MULTIGEM RING set with a round cabochon opal in a border of a calibre cut diamond, emeralds, amethyst, ruby, sapphire and peridot, no assay marks, size J / 4.74, 5.7g. 

Estimate £1,000 - £1,500