Toutes les enchères en un seul endroit

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  • 2 601 859 résultats de votre recherche
  • 0—42 000 000 EUR
  • 7 juin 1989—17 janv. 2017
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The Perfect Pink a Superb Coloured Diamond and Diamond Ring

THE PERFECT PINK A SUPERB COLOURED DIAMOND AND DIAMOND RING Set with a rectangular-shaped fancy intense pink diamond weighing 14.23 carats, flanked on either side by a rectangular-shaped diamond weighing 1.73 and 1.67 carats, mounted in 18k rose and white gold, ring size 5½ Accompanied by report no. 14432611 dated 16 May 2005 from the Gemological Institute of America stating that the 14.23 carat diamond is fancy intense pink, natural colour, VVS2 clarity, with excellent symmetry Accompanied by a note no. 1009543 dated 24 September 2010 from Gübelin Gemmological Laboratory stating that diamonds are classified into two fundamental groups based on the relative presence or absence of nitrogen incorporated into the crystal structure, as determined by the infrared spectrum. Type I diamonds contains appreciable concentrations of nitrogen, whereas type II diamonds are chemically very pure and do not reveal infrared absorption characteristics related to nitrogen. A further separation of these two groups includes type Ia (nitrogen atoms present in pairs or groups), type Ib (isolated nitrogen atoms), type IIa (no measurable traces of nitrogen) and type IIb (traces of boron). Based on its infrared spectrum, the diamond of 14.23 carats is classified as a type IIa diamond Also accompanied by two reports no. 2125332554 dated 21 July 2010 and 17550927 dated 3 August 2010 from the Gemological Institute of America stating that the 1.73 and 1.67 carat diamonds are D colour, internally flawless clarity

21 100 000 EUR*

Prix ​​d'adjudication: 179 860 000 HKD

  • HKG
  • 2010-11-29

The Archduke Joseph Diamond

THE ARCHDUKE JOSEPH DIAMOND The unmounted cushion-shaped diamond weighing approximately 76.02 carats, in purple leather fitted box Accompanied by report no. 5151001770 dated 14 September 2012 from the GIA Gemological Institute of America stating that the diamond is D colour, Internally Flawless clarity; a letter indicating that the diamond is Type IIa; a GIA monograph and a letter dated 1 October 2012 stating that 'to date the Archduke Joseph Diamond is the largest D-color, Internally Flawless diamond we have graded from the historic Golconda region'. Letter dated 12 June 2007 from the GIA Gemological Institute of America stating that 'upon examination, prior to and after re-cutting, we can confirm that the 76.02 carat diamond was cut from the diamond known as the 'Archduke Joseph Diamond'' Report no. 12090150 dated 26 September 2012 from the Gübelin GemLab stating that the diamond is D colour, Internally Flawless clarity, and a Note indicating that the diamond is Type IIa; also with an Appendix stating that the diamond is 'blessed with a purity of colour and high degree of transparency, which are particular to the world's finest natural type IIa diamond (the purest type in terms of chemistry). Diamonds of this type and size, displaying such a superior quality as well as an antique cutting style, are extremely rare and will unequivocally evoke references to the historic term of 'Golconda''

18 800 000 EUR*

Prix ​​d'adjudication: 20 355 000 CHF

  • CHE
  • 2012-11-13
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A Belle époque Diamond Devant-De-Corsage Brooch, by Cartier

A BELLE ÉPOQUE DIAMOND DEVANT-DE-CORSAGE BROOCH, BY CARTIER The pendant centering upon a pear-shaped diamond, weighing approximately 34.08 carats, an oval-shaped diamond, weighing approximately 23.55 carats, and a marquise-shaped diamond, weighing approximately 6.51 carats, enhanced by Lily-of-the-valley links set with circular-cut diamonds, and suspended from two detachable similarly-set lines, each with a pavé-set old-cut diamond palmette terminal, mounted in platinum, 1912, pendant only 9.1 cm With maker's mark for Henri Picq workshop, signed Cartier Accompanied by report no. 2155827220 dated 20 December 2013 from the GIA Gemological Institute of America stating that the 34.08 carat pear-shaped diamond is E colour, VSI clarity, and a Diamond Type Classification letter stating that the diamond is Type IA Report no. 2155827320 dated 16 December 2013 from the GIA Gemological Institute of America stating that the 23.55 carat oval-shaped diamond is D colour, VVS2 clarity, a working diagram indicating that the clarity of the diamond is potentially Internally Flawless, and a Diamond Type Classification letter stating that the diamond is Type IIA Report no. 2155827783 dated 24 December 2013 from the GIA Gemological Institute of America stating that the 6.51 carat marquise-shaped diamond is D colour, VS1 clarity, and a Diamond Type Classification letter stating that the diamond is Type IIA Report no. 5151827771 dated 20 December 2013 from the GIA Gemological Institute of America stating that the 3.54 carat heart-shaped diamond is E colour, VS2 clarity, and a Diamond Type Classification letter stating that the diamond is Type IA

14 600 000 EUR*

Prix ​​d'adjudication: 15 845 000 CHF

  • CHE
  • 2014-05-14
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A Magnificent Ruby and Diamond Necklace, by Etcetera

A MAGNIFICENT RUBY AND DIAMOND NECKLACE, BY ETCETERA Designed as an articulated brilliant-cut diamond lattice-work band, centering on a line of graduated pear-shaped diamonds, thirteen pear-shaped diamonds weighing approximately 5.14 to 1.00 carats, framed by two rows of oval and cushion-shaped rubies weighing approximately 7.02 to 1.10 carats, to the brilliant-cut diamond link backchain accented with a pear-shaped diamond, mounted in 18k white gold, 43.9 cm long With maker's mark for Etcetera Accompanied by premium report no. 79458 dated 20 March 2015 from the SSEF Swiss Gemmological Institute stating that the forty-eight rubies weighing approximately 120.00 carats total are of Burma (Myanmar) origin, with no indications of heating and the colour of these rubies may also be called 'pigeon's blood' in the trade; also accompanied by an appendix stating that the natural ruby necklace possesses extraordinary characteristics and merits special mention and appreciation. The rubies exhibit a highly matching vivid colour and an outstanding fine purity, rarely encountered in rubies of Burmese origin. The small inclusions found by microscopic inspection and the analysed properties of these rubies are the hallmarks of rubies from the reputed mines in the Mogok valley (the majority of these rubies including the largest ruby) and Mong Hsu (southeast of Mogok). Their attractive and saturated colour - poetically referred to as "pigeon blood red" - is due to a combination of well-balanced trace elements in these gemstones, characteristic for the finest rubies from Burma (Myanmar). The rubies have been spared exposure to heat treatment and their colour and purity are thus entirely natural. Assembling a matching selection of natural rubies from Burma of such quality and size - all showing the most sought after "pigeon blood red' colour - is extremely rare and exceptional. Thus this ruby necklace can be considered a true treasure of nature Also accompanied by thirty-five reports from the Gübelin Gemmological Laboratory stating that the rubies are of Burma (Myanmar) origin, with no indications of heating and this colour variety may also be called "pigeon's blood red" in the trade Also accompanied by forty-eight reports from the Gem Research Swiss Lab stating that the rubies are of Burma (Myanmar) origin, vivid red colour (GRS type "pigeon's blood"), with no indication of treatments Thirteen reports dated from 10 August 2010 to 30 May 2013 from the Gemological Institute of America stating that the pear-shaped diamonds weighing from 5.14 to 1.00 carat range from D to G colour, internally flawless to SI1 clarity

11 800 000 EUR*

Prix ​​d'adjudication: 100 360 000 HKD

  • HKG
  • 2015-06-02

La Peregrina a Natural Pearl, Diamond, Ruby and Cultured Pearl Necklace, by Cartier

LA PEREGRINA A NATURAL PEARL, DIAMOND, RUBY AND CULTURED PEARL NECKLACE, BY CARTIER Suspending a detachable drop-shaped natural pearl pendant, weighing approximately 202.24 grains or 50.56 carats, measuring approximately 17.35 - 17.90 x 25.50 mm, with an old mine-cut and rose-cut diamond and silver foliate bail, suspended from a circular-cut diamond flame motif set with a pear-shaped ruby, spaced by a detachable pear-shaped ruby and natural pearl link, to the two-strand necklace, comprising fifty-six natural pearls and four cultured pearls, intersected by eight circular-cut diamond and cushion-cut ruby flame motif plaques, mounted in platinum and gold, La Peregrina late 16th century; diamond bail early 19th century; natural pearl, diamond, ruby and cultured pearl necklace by Cartier 1972, 13½ ins., pendant may also be worn as a brooch, accompanied by the seed pearl and platinum neckchain from the time of the purchase at auction in 1969, 30¾ ins. Signed Cartier Designed by Elizabeth Taylor with Al Durante of Cartier La Peregrina with report 59574 dated 19 May 2011 from the SSEF Swiss Gemmological Institute stating that the analysed properties confirm the authenticity of this saltwater natural pearl Accompanied by an additional letter from the SSEF Swiss Gemmological Institute describing the unique rarity and exceptional historic provenance of La Peregrina Two-strand necklace with report 59572 dated 19 May 2011 from the SSEF Swiss Gemmological Institute stating that the analysed properties confirm the authenticity of these fifty-seven saltwater natural pearls and the identity of these four beaded saltwater cultured pearls

10 800 000 EUR*

Prix ​​d'adjudication: 11 842 500 USD

  • USA
  • 2011-12-13
Annonce

A Magnificent Diamond and Coloured Diamond Pendent Necklace

A MAGNIFICENT DIAMOND AND COLOURED DIAMOND PENDENT NECKLACE THE MARQUISE-CUT PURPLISH PINK DIAMOND SUSPENDING A BRIOLETTE DIAMOND WEIGHING 75.36 CARATS, JOINED TO A BRIOLETTE DIAMOND NECKCHAIN, MOUNTED IN 18K ROSE AND WHITE GOLD, 45.8 CM LONG (LENGTH ADJUSTABLE) ACCOMPANIED BY REPORT NO. 11812033 DATED 18 APRIL 2013 FROM THE GEMOLOGICAL INSTITUTE OF AMERICA STATING THAT THE 75.36 CARAT DIAMOND IS D COLOUR, INTERNALLY FLAWLESS CLARITY, WITH EXCELLENT POLISH; ALSO ACCOMPANIED BY A SUPPLEMENTAL LETTER FROM THE GEMOLOGICAL INSTITUTE OF AMERICA STATING THE 75.36 CARAT DIAMOND HAS BEEN DETERMINED TO BE TYPE IIA. TYPE IIA DIAMONDS ARE THE MOST CHEMICALLY PURE TYPE OF DIAMOND AND OFTEN HAVE EXCEPTIONAL OPTICAL TRANSPARENCY. TYPE IIA DIAMONDS WERE FIRST IDENTIFIED AS ORIGINATING FROM INDIA (PARTICULARLY FROM THE GOLCONDA REGION) BUT HAVE SINCE BEEN RECOVERED IN ALL MAJOR DIAMOND-PRODUCING REGIONS OF THE WORLD. AMONG FAMOUS GEM DIAMONDS, THE 530.20 CARAT CULLINAN AND THE 105.60 CARAT KOH-I-NOOR, ARE EXAMPLES OF TYPE IIA ALSO ACCOMPANIED BY A NOTE STATING THAT ACCORDING TO THE RECORDS OF THE GIA LABORATORY, THE 75.36 CARAT DIAMOND WAS CUT FROM THE 75.51 CARAT DIAMOND THAT WAS DESCRIBED IN THE GIA REPORT OF THE SAME NUMBER AND WAS NOTED AT THE TIME AS THE LARGEST BRIOLETTE, FLAWLESS OR INTERNALLY FLAWLESS, D COLOUR DIAMOND GRADED. THE 75.36 CARAT DIAMOND IS STILL LARGER THAN ANY OTHER DIAMOND WITH THE PREVIOUSLY MENTIONED NOTABLE CRITERIA

10 100 000 EUR*

Prix ​​d'adjudication: 86 110 000 HKD

  • HKG
  • 2013-05-28

The Vivid Pink an Exquisite Coloured Diamond and Diamond Ring, by Graff

THE VIVID PINK AN EXQUISITE COLOURED DIAMOND AND DIAMOND RING, BY GRAFF Set with a cushion-shaped fancy vivid pink diamond weighing 5.00 carats, flanked on either side by a shield-shaped diamond, mounted in platinum and 18k rose gold, ring size 5 Signed Graff Accompanied by report no. 12956371 dated 23 July 2009 from the Gemological Institute of America stating that the 5.00 carat diamond is fancy vivid pink, natural colour, VS1 clarity; with a working diagram indicating that the clarity is potentially flawless Also accompanied by a supplemental letter from the Gemological Institute of America stating the 5.00 carat diamond has been determined to be a type IIa pink diamond. Type IIa pink diamonds are very rare in nature, often have relatively few inclusions and are noted for their mostly homogenous colour in the rough. Unlike many other coloured diamonds, the colour in pink diamonds can not only be caused by impurities, but it may also be a result of the diamond's exposure to heat and pressure during transportation into the earth's crust. Type IIa pinks have been found in a number of mining regions around the world. Historically they were found in India (particularly from the Golconda region) and, in more recent times, most notably from Brazil and Africa. Among famous gem diamonds, the 70.39 carat Empress Rose and the 28.15 carat Agra are examples of type IIa pinks

9 810 000 EUR*

Prix ​​d'adjudication: 83 540 000 HKD

  • HKG
  • 2009-12-01

The Property of

The Property of A LADY A MAGNIFICENT SINGLE-STONE DIAMOND RING Set with a detachable cushion-shaped diamond weighing 78.54 carats to the plain hoop (with diamond fittings to be worn as a pendant with lot 637) With certificate 8357326 dated 29/6/1993 from the Gemological Institute of America stating that the diamond is D colour, SI1, accompanied by a working diagram indicating that the diamond is potentially flawless with probable weight loss Historical diamonds are seldom offered at auction. The knowledge that this magnificent 78.54 carat gem once belonged to an Archduke of the great dynastic house of Habsburg adds an extra edge of excitement to this sale. Graded as D colour, with SI1, potentially flawless clarity by the Gem Trade Laboratory of the Gemological Institute of America, the Archduke Joseph Diamond has that limpid transparency and soft luminescent quality that is described as "Golconda" by experienced diamond dealers. This almost undefinable water-clear appearance is characteristic of stones from the legendary diamond district of Golconda in India, in what would now be the state of Hyderabad. Described in detail by the seventeenth-century gem merchant, Jean Baptiste Tavernier, in his book "Travels in India", the mines of this area are believed to have been the source of many of the world's famous diamonds such as the Koh-i-Noor and the Regent. Unfortunately, these mines were depleted in the mid-eighteenth century. No other sources have been found that produce diamonds exhibiting this limpid transparency. The beautiful elongated cushion-shaped stone derives its name from its first known owner, Joseph August Victor Clemence Maria, Archduke of Austria and Palatinate of Hungary, great-grandson of Emperor Leopold II of the House of Habsburg, one of the primary ruling dynasties of Europe. (The title of Archduke was given to all Habsburg sons except the principal heir who became the Emperor of the Holy Roman Empire.) The House of Habsburg ruled over the elective monarchies of Austria, Bohemia and Hungary from the fifteenth to the twentieth century. Archduke Joseph August (1872-1962) distinguished himself as a field marshall during World War I and was named first Regent of Hungary, a position that he held until he was forced to resign under pressure from the Allies. At this time, Archduke Joseph August retired from active politics, though he still became a member of the Upper House of Parliament, and involved himself in the cultural aspects of Hungarian society. He became an honarary member of the Hungarian Academy of Sciences and acted as its president from 1936-1944. With the occupation of Hungary by the Soviet troops at the end of World War II, Archduke Joseph August emigrated to the United States and lived out his days in exile. It is believed that Joseph August gave the diamond to his son, Joseph Francis (1895-1957) at some point. Records show that in 1933 the gem was deposited in the vault of the Hungarian General Credit Bank. Evidence also shows that the stone was sold in 1936 to an undisclosed buyer. During World War II, the diamond escaped the notice of the Nazis and has been maintained discretely from 1936 to the present. The lack of concrete information about the Archduke Diamond is tantalizing. That we only know a few details imparts an extra aura of mystery to this superlative gem. Perhaps it is just as well not to know more. For, even as the threads that we do have provide us with a tangible link to historic figures and events, we can nevertheless embellish the story in fantasy, imagining exotic evenings among the royal heads of Europe at which this diamond may have been worn and admired. Elise B. Misiorowski Librarian, Gemological Institute of America

8 940 000 EUR*

Prix ​​d'adjudication: 9 683 500 CHF

  • CHE
  • 1993-11-18

A MAGNIFICENT UNMOUNTED CUT-CORNERED RECTANGULAR-CUT FANCY PINK DIAMOND

A MAGNIFICENT UNMOUNTED CUT-CORNERED RECTANGULAR-CUT FANCY PINK DIAMOND Weighing 19.66 carats With certificate 8410928 dated 16/2/1994 from the Gemological Institute of America stating that the diamond is fancy pink, natural colour, VVS2 Conoisseurs have considered pink diamonds to be among the most precious of gemstones since they were discovered in the mines of India. In modern times, they are seldom found and usually only in very small sizes such as those from the Australian mines. Larger specimens rarely come up for auction. Their scarcity renders the appearance of this 19.66-carat stone an extraordinary event. A beautiful shade of pink, its VVS2 clarity grade further enhances its desirability. On viewing the stone, such exquisite pink diamonds as the "Hortensia" (20-carats, Apollon Gallery, Louvre), the "Mouawad Pink" (21.06-carats, sold Christie's Geneva, May 1989) and the "Agra" (32.24-carats, sold Christie's London, June 1990) come to mind. Exceptional stones of this calibur were worn by great rulers such as Napoleon and the Moghul Emperors. Gemmologists are still unsure as to the origin of the colour in pink diamonds. Previously assumed to be the result of the element manganese in the atomic structure, it is now asserted to be the consequence of an alteration in the atomic lattice. Regardless, their beauty continues to mesmerize collectors the world over. As this stone is the third largest rectangular-cut pink diamond ever to be offered at auction, it will certainly take its place among the great diamonds of this hue. Estimate on request

8 840 000 EUR*

Prix ​​d'adjudication: 9 573 500 CHF

  • CHE
  • 1994-11-17

A Magnificent Pair of Diamond Ear Pendants

A MAGNIFICENT PAIR OF DIAMOND EAR PENDANTS Each suspending a pear-shaped diamond weighing 25.49 and 25.31 carats, surmounted by a pear-shaped diamond weighing 2.45 and 2.33 carats, spaced by a brilliant-cut diamond weighing 0.73 and 0.65 carat, mounted in 18k white gold, 5.1 cm long Accompanied by two reports nos. 2155849682 and 2155922825 dated 9 January 2014 and 20 March 2014 from the Gemological Institute of America stating that the 25.49 and 25.31 carat diamonds are D colour, internally flawless clarity, with excellent polish and symmetry Also accompanied by two supplemental letters from the Gemological Institute of America stating that the 25.49 and 25.31 carat diamonds have been determined to be type IIa. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency. Type IIa diamonds were first identified as originating from India (particularly from the Golconda region) but have since been recovered in all major diamond-producing regions of the world. Among famous gem diamonds, the 530.20 carat Cullinan I and the 105.60 carat Koh-i-noor, are examples of Type IIa Accompanied by four reports dated 20 October 2004 to 3 February 2014 from the Gemological Institute of America with the following details: Report Weight Colour Clarity CutR13678131 2.45 D Internally Flawless Pear 1132867977 2.33 D Internally Flawless Pear 2127999634 0.73 D Internally Flawless Brilliant 1165821523 0.65 D Internally Flawless Brilliant Please note that one certificate is more than 3 years old and might require an update (2)

8 820 000 EUR*

Prix ​​d'adjudication: 75 160 000 HKD

  • HKG
  • 2014-05-27

The Imperial Cushions A SPECTACULAR PAIR OF DIAMOND EAR PENDANTS

The Imperial Cushions A SPECTACULAR PAIR OF DIAMOND EAR PENDANTS Each set with a cushion-shaped diamond weighing 23.49 and 23.11 carats, spaced by single-cut diamond bell-shaped links, joined to the baguette-cut and collet-set diamond surmount, mounted in platinum, 5.0 cm long Accompanied by two reports nos. 2135221734 and 1132221736 dated 25 March 2011 from the Gemological Institute of America stating that the 23.49 and 23.11 carat diamond is D colour, VVS1 clarity; with a working diagram indicating that the clarity is potentially flawless Also accompanied by reports nos. 11030047 and 11030046 dated 14 March 2011 from the Gübelin Gemmological Laboratory stating that the 23.49 and 23.11 carat diamonds are D colour, VS1 clarity; Also accompanied by two appendixes and a note from the Gübelin Gemmological Laboratory stating that the diamonds possess an antique cutting style which is rarely encountered in the gem trade today. In addition, the diamonds are classified as type IIa (a chemically very pure type of natural diamond). They display a colour and degree of transparency which are particular to the finest of these unique gemstones. Diamonds of this type, exhibiting an antique cutting style as well as a superior quality, are very rare and will most certainly evoke references to the historic term of "Golconda". In addition, the occurrence of such a matching pair of Golconda diamonds, incredibly similar in size, cut and shape, while displaying identical colour and spectroscopic characteristics, is an exceptional coincidence in itself. When placed table against table in a symmetrically opposed fashion, these two pieces seems to form a nice "dipyramidal" shape, suggesting they might originate from one large single rough crystal. Such a well-matched pair of Golconda Diamonds reaching over 23 carats in size remains an undeniable rarity (2)

8 490 000 EUR*

Prix ​​d'adjudication: 72 340 000 HKD

  • HKG
  • 2011-05-31

* Veuillez noter que le prix ne correspond pas à la valeur d'aujourd'hui, mais uniquement à la devise au moment de l'achat.

Bijouterie & Joaillerie

Barnebys regroupe en un seul endroit les bijoux vendus dans les maisons de ventes du monde entier. Vous trouverez dans cette catégorie des colliers, des boucles d’oreilles, des bagues et des boutons de manchettes en argent, or et en platine. Les bijoux avec des perles et pierres précieuses tel que diamants, saphirs, agates, aigue-marine, quartz, topaze et nacre ainsi que des bijoux moderne sont regroupés ici.

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