Aquamarine and diamond ringOf wave design set with alternating baguette-cut aquamarines and brilliant-cut diamonds, size approx. N (leading edge)...

Tabbah: CufflinksSingle-sided: Each rectangular polished and textured plaque to a t-bar terminal, signed N. Tabbah, plaque length 2.0cmFor further...

Diamond single-stone ringSet with a brilliant-cut diamond weighing 2.53 carats, mounted in platinum, UK hallmark, ring size approx. MFor further i...

Chopard: pair of 'Happy Diamonds' pendent earringsEach of heart design, set with brilliant-cut diamonds, signed Chopard, numbered 84/6467/0-20 310...

Fancy-coloured single-stone diamond pendant necklace and earring suiteThe brilliant-cut diamond of orangey-brown tint to an omega-link chain, the ...

Tiffany: Sapphire ringSet with an oval cabochon sapphire, signed Tiffany & Co., size P, maker's case and boxFor further information on this lot pl...

Fancy coloured diamond ring, diamond eternity ring, and emerald eternity ringThe step-cut Fancy Light Brownish Yellow diamond weighing 1.87 carats...

Diamond ring and a diamond eternity ring1st: Of crossover design, with brilliant-cut diamond terminals, 2nd: Set throughout with brilliant-cut dia...

Diamond flower brooch, circa 1890The flower set en tremblant , set throughout with cushion-shaped, old brilliant and rose-cut diamonds, mounted i...

Diamond and pearl necklaceSet with old brilliant and rose-cut diamonds, with two pearl drops, length 38.0cm, pearls untestedFor further informatio...

Diamond broochThe elaborate flower set throughout with cushion-shaped, old brilliant and rose-cut diamonds, old brilliant and cushion-shaped diamo...

Natural and cultured pearl necklace with diamond claspThe row of 5.0mm-6.6mm natural and cultured pearls to a clasp set with a cushion-shaped diam...

Diamond brooch, late 19th centurySet throughout with cushion-shaped and old brilliant-cut diamonds, diamonds approx. 3.40cts total, accompanied by...

A diamond brooch, late 19th centurySet with old brilliant and rose-cut diamonds, width 3.8cmFor further information on this lot please visit Bonha...

Ruby and diamond flag broochSet with oval-cut rubies and rose-cut diamonds, width 2.6cmFor further information on this lot please visit Bonhams.co...

Natural pearl double-strand necklaceThe 2.2mm-3.9mm natural pearls to a rose-cut diamond and circular-cut sapphire clasp, length of shortest stra...

Gem-set broochDesigned as a potted tree, set with French-cut diamonds and an octagonal diamond plaque, vari-cut sapphires and emeralds and carved ...

Emerald and diamond ringThe step-cut emerald between shoulders pavé-set with brilliant-cut diamonds, ring size approx. MFor further information on...

Diamond ringThe brilliant-cut diamond between bombé shoulders set with similarly and step-cut diamonds, principal diamond approx. 1.50cts, ring si...

Diamond and gem-set charm bracelet with two Cartier charms, circa 1920/1930The fancy-link chain suspending various charms, including two horseshoe...

Ruby Eternity RingChannel-set with step-cut rubies, rig size approx. N½For further information on this lot please visit Bonhams.com ...[more]

Mersmann: Art Deco diamond watch, circa 1920The circular dial with baton hourmarkers, with a single-cut diamond bezel, between similarly-set geome...

Diamond single-stone ringSet with a cushion-shaped diamond weighing 4.21cts, ring size approx. J½For further information on this lot please visit ...

Diamond bar brooch, circa 1890Set with old brilliant-cut diamonds, each end terminating in trefoil design, diamonds approx. 2.50cts, length approx...

Diamond star brooch, circa 1890Set with old brilliant and rose-cut diamonds, to a pinback and bail attachment, old brilliant-cut diamonds approx. ...

Diamond three-stone ringSet with old brilliant-cut diamonds, diamonds approx. 1.75cts total, ring size approx. MFor further information on this lo...

Opal, rock crystal and enamel broochdesigned as a rock crystal heart with green enamelled wings, set with opal cabochons and hanging opal bead, le...

Fabergé: enamel and diamond 'Palais Tsarskoye Selo' pendant necklaceThe opalescent guilloché enamel egg with brilliant-cut diamond accents, to an ...

Cartier: RingPolished hoop, signed Cartier, numbered F51608, maker's mark, French assay mark, size O, maker's caseFor further information on this ...

Van Cleef & Arpels: Turquoise 'Alhambra' pendant necklaceSet with a turquoise quatrefoil plaque, to an 18 carat yellow gold cable-link chain, sign...

Bulgari: ceramic and diamond 'Serpenti Spiga' watchThe expandable sprung ceramic links, terminating in an ovoid dial with Roman numeral hourmarker...

Bulgari: 'Monete' earclips and a ringEach gas-pipe hoop with an applied Indian coin, the ring of bicoloured sprung design, one coin deficient, bot...

Cartier: diamond 'Love' bangleWith screwhead motifs and brilliant-cut diamonds, signed Carter, maker's mark, numbered QZ 2581, inner measurements ...

Cartier: diamond 'Juste Un Clou' ringDesigned as a wraparound 18 carat rose gold nail, the head and tip accented by brilliant-cut diamonds, signed...

Gem-set poodle broochThe textured body with circular-cut ruby eyes and a brilliant-cut diamond collar, width 3.2cmFor further information on this ...

White Sapphire ringSet with an oval-cut white sapphire weighing 7.08 carats, French import mark, ring size approx. MFootnotes:Accompanied by a rep...

Garrard: Bracelet and necklace suite, 1993The bicoloured fancy-links set with brilliant-cut diamond accents, mounted in 18 carat gold, signed Garr...

Van Cleef & Arpels: diamond cluster ringThe brilliant-cut weighing 0.51 carat within a similarly-cut diamond surround, between brilliant-cut diamo...

Diamond earstudsEach set with a brilliant-cut diamond, mounted in 18 carat white gold, UK hallmark, European convention mark, diamonds 0.83cts tot...

Pair of diamond pendent earringsEach designed as a series of openwork pear-shaped links, set throughout with brilliant-cut diamonds, issuing simil...

Blue topaz and diamond pendant and cultured pearl necklaceThe treated blue topaz suspended from a brilliant-cut diamond, mounted in 9 carat white ...

Diamond braceletThe fancy-links set with brilliant and baguette-cut diamonds, diamonds approx. 6.50cts total, length 18.5cmFor further information...

Diamond plaque ringCentrally set with a step-cut diamond, the surround and bifurcated shoulders set with brilliant and princess-cut diamonds, diam...

Diamond double clip brooch, circa 1950Set throughout with brilliant and baguette-cut diamonds, diamonds approx. 8.50cts total, width 7.0cmFor furt...

A Five-Stone Diamond RingSet with emerald-cut diamonds, diamonds 1.52cts total, ring size approx. KFootnotes:Accompanied by five dossiers from GIA...

Double row pearl necklace with a diamond claspThe 9.4mm cultured pearls to a scrolling clasp set with brilliant and baguette-cut diamonds, length ...

Diamond double clip brooch, circa 1950Set throughout with baguette, old brilliant and single-cut diamonds, diamonds approx. 4.20cts total, width 6...

Diamond dress ringSet with a brilliant-cut diamond weighing 2.04 carats, within a surround of similarly and baguette-cut diamonds, ring size appro...

Diamond ringSet with a brilliant-cut diamond weighing 2.03 carats, ring size approx. O½Footnotes:Accompanied by a report from GIA stating that the...

Diamond braceletSet throughout with brilliant-cut diamonds, diamonds approx. 7.20cts total length 17.5cmFor further information on this lot please...

Elvina: Diamond flower ringSet throughout with brilliant-cut diamonds, principal diamond very approx. 1.00ct, remaining diamonds approx. 3.30cts t...

Diamond ringSet with an emerald-cut diamond weighing 2.41 carats, between bifurcated brilliant-cut diamond shoulders, mounted in platinum, London ...

Diamond earringsSet with brilliant and baguette-cut diamonds, diamonds approx. 6.40cts total, length 3.7cmFor further information on this lot plea...