A DIAMOND AND CONCH PEARL AND DIAMOND PENDANT NECKLACE in platinum, the pendant comprising a circular motif set with round brilliant cut diamonds suspending a conch pearl of 6.90 carats, suspended from a trace chain accented by further round brillian

Estimate £4,000 - £6,000

CHARLES DE TEMPLE, A MODERNIST DIAMOND SAUTOIR NECKLACE, 1972 in 18ct yellow gold, designed as a series of sculptural textured gold links, every other link set with baguette cut diamonds, the diamonds all totalling 4.5-5.0 carats, signed CdeT, full B

Estimate £15,000 - £20,000

A FINE ANTIQUE DIAMOND NECKLACE, EARLY 20TH CENTURY in platinum, comprising three laurel wreaths surmounted by bow motifs, each suspending an articulated old pear cut diamond drop, set throughout with rose cut diamonds, suspended from a fancy link ch

Estimate £2,500 - £3,500

A FINE DIAMOND PENDANT NECKLACE in 18ct white gold, the foliate style pendant comprising an articulated drop set with an old cushion cut diamond of approximately 1.80 carats, in a wreath style border set throughout with round brilliant and old Europe

Estimate £20,000 - £25,000

CARTIER, A RARE PINK, YELLOW AND WHITE DIAMOND TRINITY NECKLACE in 18ct white, yellow and rose gold, the pendant comprising three interlocking rings, pave set with white, yellow and pink round brilliant cut diamonds respectively, suspended from a tr

Estimate £25,000 - £35,000

TIFFANY & CO., A DIAMOND SIGNATURE NECKLACE in 18ct yellow gold, comprising three strands of fluted links, accented by round brilliant cut diamonds all totalling 3.5-4.0 carats, signed Tiffany & Co. 1992, partial British hallmarks, 38.0cm, 125.7g. 

Estimate £8,000 - £12,000

MARINA B., A MOTHER OF PEARL SAUTOIR NECKLACE in 18ct yellow gold, comprising a fancy link chain accented by polished black and white mother of pearl, signed Marina B. and numbered, stamped 750, 72.0cm, 59.6g. 

Estimate £3,000 - £5,000

A TURQUOISE AND DIAMOND FRINGE NECKLACE in 18ct yellow gold, set with a row of round cabochon turquoise punctuated by foliate motifs set with round brilliant cut diamonds, suspending a fringe of turquoise and diamond drops, together with a detachable

Estimate £12,000 - £16,000

BULGARI, A RUBY, DIAMOND AND ONYX RIBBON NECKLACE in 18ct yellow gold, the tapering collar necklace set with hexagonal cabochon onyx in borders of round brilliant cut diamonds, accented throughout with round brilliant cut diamonds and round cabochon

Estimate £60,000 - £80,000

VAN CLEEF & ARPELS, A CARNELIAN, MOTHER OF PEARL AND DIAMOND BOUTON D'OR NECKLACE in 18ct rose gold, comprising three rows of polished carnelian, mother of pearl and gold discs, each set with a round brilliant cut diamond, the diamonds all totalling

Estimate £50,000 - £70,000

ROBERT WANDER, A FINE INDICOLITE TOURMALINE AND DIAMOND CROSS PENDANT NECKLACE in 18ct yellow gold, designed as a cross set with rectangular step cut indicolite tourmalines, with an applied scroll set with round cut blue, orange, yellow and green sap

Estimate £12,000 - £16,000

A FINE EMERALD AND DIAMOND NECKLACE in 18ct yellow gold, comprising a row of oval cabochon and marquise cut emeralds in clusters of round brilliant cut diamonds, accented by marquise cut diamonds, suspending an oval cabochon emerald pendant in a clus

Estimate £50,000 - £70,000

A 7.18 CARAT CEYLON NO HEAT SAPPHIRE AND DIAMOND PENDANT in platinum, the pendant set with a pear shaped sapphire of 7.18 carats in a border of round brilliant cut diamonds, surmounted by a round brilliant cut diamond and a hexagonal fancy cut diamon

Estimate £20,000 - £30,000

CARTIER, AN IMPORTANT RUBY AND DIAMOND CLUSTER NECKLACE in white gold and platinum, comprising a graduating row of round cut rubies in clusters of round brilliant cut diamonds, accented by further round brilliant cut diamonds, the principal ruby weig

Estimate £200,000 - £250,000

A BURMA NO HEAT SAPPHIRE AND DIAMOND PENDANT NECKLACE in platinum, designed as a bow set with a round brilliant cut diamond, suspending a pear cut sapphire of approximately 1.50 carats in a border of further round brilliant cut diamonds, suspended fr

Estimate £5,000 - £7,000

AN ANTIQUE CONCH PEARL AND DIAMOND PENDANT NECKLACE in yellow gold and silver, the scrolling openwork pendant set throughout with old cut diamonds, suspending a conch pearl drop of 9.8mm, the diamonds all totalling 2.0-2.3 carats, suspended from a la

Estimate £4,000 - £6,000

AN ANTIQUE NATURAL SALTWATER PEARL AND DIAMOND NECKLACE in yellow gold and silver, comprising a row of foliate links set with old cut diamonds, suspending a fringe of natural saltwater pearl drops ranging from 5.2mm-14.7mm, suspended from a snake cha

Estimate £20,000 - £30,000

CARTIER, AN EMERALD AND DIAMOND CLUSTER NECKLACE in white gold and platinum, comprising a graduating row of round cut emeralds in clusters of round brilliant cut diamonds, accented by further round brilliant cut diamonds, the principal emerald weighi

Estimate £200,000 - £250,000

TIFFANY & CO, AN IMPORTANT SAPPHIRE AND DIAMOND NECKLACE set with two central old cut diamonds of 3.10 and 2.20 carats respectively, the necklace set with step cut sapphires and further old and emerald cut diamonds, the diamonds all totalling 7.5-8.5

Estimate £80,000 - £120,000

A DIAMOND AND PEARL NECKLACE in white and yellow gold, reverse set with an oval cut diamond of approximately 5.20 carats in an openwork surround set with further old cut diamonds suspending a pearl of 11.9mm, suspended from a fancy link chain, no ass

Estimate £20,000 - £30,000

VAN CLEEF & ARPELS, A RARE VINTAGE LAPIS LAZULI ALHAMBRA NECKLACE in 18ct yellow gold, the chain punctuated by twenty quatrefoil motifs set with polished lapis lazuli, signed VCA and numbered, French maker's mark, French assay marks, 80.0cm, 47.8g. A

Estimate £30,000 - £50,000

A COLOMBIAN EMERALD AND DIAMOND NECKLACE in 18ct white gold, comprising five articulated rows of round brilliant cut diamonds, suspending a geometric pendant set with a square step cut emerald and single and carre cut diamonds, suspending a pear cut

Estimate £25,000 - £35,000

AN IMPORTANT ART DECO DIAMOND SAUTOIR NECKLACE in platinum, comprising a single row of one hundred and three bezel set old cut diamonds of various sizes, accented by stylised baton links, the diamonds all totalling 60.0-65.0 carats, no assay marks, 1

Estimate £80,000 - £120,000

BRIGITTE ERMEL, A NEPHRITE JADE AND DIAMOND BAMBOU SACRE NECKLACE in 18ct white gold, the circular pendant set with a polished nephrite jade, accented by applied foliate motifs set with round brilliant cut yellow and white diamonds, suspended from a

Estimate £8,000 - £12,000