VAN CLEEF & ARPELS, A TWENTY MOTIF ONYX ALHAMBRA NECKLACE in 18ct yellow gold, comprising twenty beaded quatrefoil motifs set with polished onyx, connected by lengths of chain, signed VCA and numbered, French assay marks, stamped Au750, 85.5cm, 47.6g

Estimate £10,000 - £15,000

THEO FENNELL, A DIAMOND KEY PENDANT AND CHAIN in 18ct white gold, the key shaped pendant set throughout with round brilliant cut diamonds, suspended from a trace chain, signed FENNELL, full British hallmarks, pendant 5.5cm, chain 51.5cm, 43.6g. 

Estimate £5,000 - £7,000

A FINE UNHEATED RUBY AND DIAMOND NECKLACE in platinum, set with oval cut rubies, accented by round brilliant and tapered baguette cut diamonds, the rubies all totalling 30.0-32.0 carats, the diamonds all totalling 9.0-10.0 carats, stamped PLAT, 39.5c

Estimate £40,000 - £60,000

BOUCHERON, A GOLD COLLAR NECKLACE in 18ct yellow gold, comprising a row of alternating gold beads and fluted gold links, signed Boucheron, French maker's mark, French assay marks, stamped 750, 40.0cm, 69.2g.

Estimate £5,000 - £7,000

AN IMPORTANT 53.23 CARAT DIAMOND RIVIERE NECKLACE in 18ct white gold, set with a row of graduating round brilliant cut diamonds, the principal three diamonds weighing 2.00, 1.50 and 1.50 carats, the diamonds all totalling 53.23 carats, full British h

Estimate £80,000 - £120,000

ELIZABETH GAGE, AN ANCIENT ROMAN COIN AND PEARL PENDANT NECKLACE in 18ct yellow gold, the pendant set with an ancient Roman coin of Emperor Constantine I, the border inscribed 'Constantine I 320 A.D, suspended from a single strand of pearls, signed G

Estimate £2,000 - £3,000

A FINE EMERALD AND DIAMOND CLUSTER RIVIERE NECKLACE set with a graduating row of oval cut emeralds in borders of round brilliant cut diamonds, the emeralds all totalling 55.0-60.0 carats, the diamonds all totalling 5.5-6.0 carats, stamped 18K, 42.0cm

Estimate £20,000 - £30,000

A YELLOW SAPPHIRE AND DIAMOND CLUSTER NECKLACE set with a row of oval cut yellow sapphires in borders of round brilliant cut diamonds, the sapphires all totalling 23.0-25.0 carats, the diamonds all totalling 4.5-5.0 carats, stamped 14K, 42.5cm, 28.6g

Estimate £4,000 - £6,000

A FINE ANTIQUE ART NOUVEAU DIAMOND PENDANT NECKLACE / BROOCH the scrolling openwork pendant set with four principal old European cut diamonds accented by round cut diamonds, suspending an old European cut diamond drop, the diamonds all totalling 5.0-

Estimate £8,000 - £12,000

A FINE PEARL AND DIAMOND NECKLACE comprising a single row of graduating pearls ranging from 5.0mm-9.2mm, the clasp set with a baguette cut diamond of approximately 0.78 carats, no assay marks, 44.0cm, 25.3g. 

Estimate £4,000 - £6,000

MARINA B., A DIAMOND COLLAR NECKLACE in 18ct white gold, comprising a row of scrolling links, some pave set with round brilliant cut diamonds, the diamonds totalling approximately 3.50 carats, signed Marina B, Italian assay marks, stamped 750, 36.0cm

Estimate £15,000 - £20,000

A FINE THREE ROW NATURAL SALTWATER PEARL, SAPPHIRE AND DIAMOND NECKLACE comprising three rows of graduating pearls ranging from 3.2mm-8.6mm, the clasp set with a round cabochon sapphire accented by old cut diamonds, no assay marks, 42.0cm, 61.5g. Acc

Estimate £40,000 - £60,000

A FINE 22.02 CARAT DIAMOND RIVIERE NECKLACE set with a graduating row of round brilliant cut diamonds, inscribed 115/22.02, stamped 18K, 42.5cm, 28.2g. 

Estimate £12,000 - £18,000

CARTIER, A DRAPERIE DE DECOLLETE NECKLACE, 1999 in 18ct yellow gold, comprising six rows of beaded chains of varying lengths, signed Cartier and numbered, stamped 750, shortest row 43.5cm, 72.8g. Accompanied by a Cartier necklace box. 

Estimate £7,000 - £9,000

GAY FRERES, A GLASS INTAGLIO AND SAPPHIRE NECKLACE set with a glass intaglio moulded to depict a classical warrior, accented by a heart shaped cabochon sapphire, suspended from a curb chain, Guy Freres maker's mark, stamped 750, 42.2cm, 210.6g. 

Estimate £15,000 - £20,000

A FINE ANTIQUE DIAMOND NEGLIGEE NECKLACE in white and yellow gold, comprising a trace chain set with a row of old cut diamonds, suspending two old cut diamond drops of 0.97 carats and 1.13 carats respectively, no assay marks, necklace 40.0cm, pendant

Estimate £3,000 - £5,000

A FINE 35.00 CARAT DIAMOND RIVIERE NECKLACE comprising a row of sixty five round brilliant cut diamonds, the diamonds all totalling approximately 35.00 carats, no assay marks, 38.0cm, 39.0g. 

Estimate £30,000 - £50,000

VERDURA, A CORAL AND ONYX NECKLACE comprising a row of graduating polished coral beads, accented by ornate gold beads and polished onyx beads, later clasp stamped 925, 79.0cm, 68.4g. Accompanied by a facsimile letter from Verdura detailing that they

Estimate £5,000 - £7,000

A FINE ANTIQUE NATURAL SALTWATER PEARL AND DIAMOND PENDANT NECKLACE, EARLY 20TH CENTURY the pendant designed as a floral wreath surmounted by a bow, set throughout with old cut diamonds, suspending a pearl drop of 12.0mm, suspended from a later trace

Estimate £10,000 - £15,000

CARTIER, A DIAMOND LINE NECKLACE in 18ct yellow gold, comprising a row of round brilliant cut diamonds punctuated by navette shaped links set with further diamonds, the diamonds totalling 7.5-7.8 carats, signed Cartier and numbered, French assay mark

Estimate £20,000 - £25,000

A FINE PERIDOT AND DIAMOND RIVIERE NECKLACE set with a row of cushion cut peridots in borders of round brilliant cut diamonds, the peridots all totalling 148.0-150.0 carats, the diamonds all totalling 5.5-6.0 carats, stamped 18K 750, 43.0cm, 74.2g.

Estimate £20,000 - £30,000

A DIAMOND NECKLACE comprising stylised links leading to a central pendant set with rows of baguette cut diamonds, accented by round brilliant cut diamonds, the diamonds all totalling 10.0-11.0 carats, no assay marks, 38.0cm, 124.4g. 

Estimate £8,000 - £12,000

BULGARI, A CORAL BULGARI BULGARI PENDANT NECKLACE in 18ct yellow gold, the pendant set with a polished coral disc, the border with engraved lettering 'BVGLARI', suspended from a trace chain, signed Bulgari, Italian assay marks, stamped 750, pendant 1

Estimate £2,000 - £3,000

VAN CLEEF & ARPELS, A GOLD ALHAMBRA PENDANT NECKLACE in 18ct yellow gold, comprising a gold quatrefoil medallion set within a beaded border, suspended from a trace chain, signed VCA and numbered, French assay marks, stamped Au750, pendant 1.5cm, chai

Estimate £2,000 - £3,000

AN AQUAMARINE AND DIAMOND CLUSTER NECKLACE comprising a row of graduating rose cut aquamarines in borders of single cut diamonds, the aquamarines totalling 22.0-25.0 carats, the diamonds totalling 5.0-5.5 carats, stamped 14K, 46.0cm, 30.7g. 

Estimate £3,000 - £5,000

AN ANTIQUE BURMA NO HEAT RUBY, EMERALD AND DIAMOND CROSS PENDANT NECKLACE in yellow gold, the pendant comprising a rose cut diamond in a cluster of oval shaped emeralds suspending a cross set with oval shaped rubies, suspended from a chain set with a

Estimate £10,000 - £15,000

AN ANTIQUE PEARL AND DIAMOND PENDANT NECKLACE in yellow gold and silver, the pendant set with a pearl of 15.2mm accented by old and rose cut diamonds, suspending a pearl drop accented by a bow motif set with round cut diamonds, suspended from a stran

Estimate £4,000 - £6,000

A FINE ANTIQUE DIAMOND PENDANT NECKLACE, EARLY 20TH CENTURY the openwork pendant of foliate design, set with round cut diamonds, suspending an old cut diamond drop of approximately 0.65 carats, suspended from a trace chain, no assay marks, pendant 4.

Estimate £4,000 - £6,000

AN EMERALD AND DIAMOND FRINGE NECKLACE comprising a trace chain suspending seven drops set with pear cut emeralds in borders of round brilliant cut diamonds, the emeralds all totalling 5.0-6.0 carats, stamped 18K, 46.5cm, 8.1g. 

Estimate £3,000 - £5,000

CARTIER, A DIAMOND PENDANT NECKLACE the pendant designed as an open circle set with round brilliant cut diamonds, suspending a fringe of round brilliant cut diamond drops, the diamonds totalling 0.6-0.7 carats, suspended from a trace chain, signed Ca

Estimate £3,500 - £4,500

A DIAMOND PENDANT NECKLACE the openwork pendant set with a principal round brilliant cut diamond of approximately 0.43 carats accented by single cut diamonds, suspending a marquise cut diamond drop of approximately 0.93 carats, suspended from a trace

Estimate £2,500 - £3,500

A FINE ALEXANDRITE AND DIAMOND LINE NECKLACE comprising a graduating row of alternating round cut alexandrites and round brilliant cut diamonds, the alexandrites all totalling 8.0-10.0 carats, the diamonds all totalling 6.0-6.5 carats, stamped 18K, 4

Estimate £12,000 - £16,000

A FINE ANTIQUE NATURAL SALTWATER PEARL AND DIAMOND PENDANT NECKLACE, 19TH CENTURY in yellow gold and silver, the pendant set with a large natural pearl of approximately 30.0mm in length, in a foliate border set with old cut and rose cut diamonds, sus

Estimate £10,000 - £15,000

A FINE BELLE EPOQUE DIAMOND PENDANT NECKLACE the openwork foliate pendant set throughout with old and rose cut diamonds, suspending swags set with further rose cut diamonds and old cut diamond drops, the diamonds all totalling 2.5-2.8 carats, suspend

Estimate £10,000 - £15,000

A DIAMOND COLLAR NECKLACE the central section set with pear and marquise cut diamonds leading to a row of pear cut diamonds framed by borders of round brilliant cut diamonds, accented by round brilliant cut diamonds, the diamonds all totalling 13.5-1

Estimate £12,000 - £16,000

A DIAMOND COLLAR NECKLACE in 18ct white gold, the scrollings links partially set with round brilliant cut diamonds, the diamonds all totalling 8.0-9.0 carats, full British hallmarks, 38.0cm, 94.0g. 

Estimate £10,000 - £15,000