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7 avril 2016

"The Unique Pink" chez Sotheby's Genève

The Unique Pink 

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Lot 495. "The Unique Pink". Le plus grand diamant rose poire « fancy vivid pink » jamais proposé aux enchères, pesant 15,38 carats. Estimation entre 28 - 38 millions $ (CHF 27,2 – 36,9 MM). Sold for CHF30,826,000 ($31,561,200). Photo Sotheby's.

Genève, le 7 avril 2016 – La vente de printemps de Haute Joaillerie chez Sotheby’s sera illuminée par l’extraordinaire éclat du « Unique Pink », un diamant rose exceptionnel, en forme de poire, pesant 15,38 carats. L’Institut Gemmologique d’Amérique (GIA) a non seulement certifié que le « Unique Pink » possède la couleur la plus recherchée pour les diamants roses, Fancy Vivid Pink, mais a également déclaré que la pierre est « d’une clarté incomparable » ; elle appartient à la catégorie des diamants de Type IIa. Sa forme et sa taille brillant font ressortir la rare intensité de sa teinte, et le place ainsi parmi les plus beaux diamants au monde. Le « Unique Pink » sera proposé aux enchères chez Sotheby’s à Genève le 17 mai 2016, avec une estimation entre 28 - 38 millions $ (CHF 27,2 – 36,9 MM).

A l’annonce de la vente du « Unique Pink », David Bennett, Président mondial du département International Haute Joaillerie chez Sotheby’s, a commenté : « Il est difficile d’imaginer un diamant qui illustre mieux le terme « Vivid Pink » que cette magnifique pierre. La couleur est tout simplement surprenante, et au vu de sa taille, il est selon mon expérience véritablement unique ». 

Une pierre d’exception. Rare et remarquable, de toute beauté.” Monographie du GIA à propos du “Unique Pink”, 2016

Le diamant brut qui a permis de créer le « Unique Pink » a été taillé et poli par Cora International, mondialement connue pour ses diamants rares et uniques, de grandes tailles et de couleur. Selon le GIA, « Bien qu’il faille tout d’abord remercier la nature pour les qualités inhabituelles du « Unique Pink », le travail des tailleurs ne doit pas passer inaperçu. Le travail de polissage de cette précieuse pierre brute pour en faire la pierre étincelante qu’elle est aujourd’hui, demande un talent considérable ».

La découverte de tout diamant rose de qualité gemme est d’une extrême rareté. Parmi les diamants examinés par l’institut chaque année, moins de 3% sont certifiés diamants de couleur, et moins de 5% de ces derniers peuvent être classés comme diamants roses. Le diamant « Unique Pink » est une pierre « absolument fascinante » d’après l’institut, qui suite à l’analyse de la teinte et de l’intensité, l’a certifié Fancy Vivid Pink – le rose le plus vif qui soit. 

« La découverte de la teinte Fancy Vivid Pink dans un diamant non-traité est déjà d’une rareté exceptionnelle. La présence d’une telle teinte et d’une telle intensité dans un diamant de 15,38 carats est époustouflante. » Monographie du GIA à propos du « Unique Pink », 2016

Watch the video

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LONDON.- A woman poses for a photograph holding a vivid pink pear-shaped 15.38 carat diamond, known as the 'Unique Pink', during a press preview at Sotheby's auctioneers in London, on April 7, 2016. The diamond is expected realise £19-26 million pounds (25-33 million Euros, $28-38 million dollars) at auction in Geneva on May 17, 2016. BEN STANSALL / AFP

Geneva, 7 April 2016 - Sotheby’s Spring sale of Magnificent Jewels and Noble Jewels will be led by the spectacular “Unique Pink”, a supremely rare and exceptional Fancy Vivid Pink diamond weighing 15.38 carats. In addition to receiving the highest possible colour grading for a pink diamond from the Gemological Institute of America (GIA), the “Unique Pink” has been found to be Type IIa, displaying “exceedingly pure structure”. The stone’s exquisite pear shape and brilliant cut accentuate its exceptional saturation, placing it in a rarefied category even among the world’s most beautiful diamonds. The “Unique Pink” will be offered at auction in Geneva on 17 May with a pre-sale estimate of $28-38 million (CHF 27.2m – 36.9m).

Announcing the sale of the “Unique Pink”, David Bennett, Worldwide Chairman of Sotheby’s International Jewellery Division, commented: “It is difficult to imagine a diamond that better illustrates the term Vivid Pink than this outstanding stone. The colour is simply astonishing and, for its size, it is in my experience truly unique.” 

THE DISTINCTION OF A TRULY EXCEPTIONAL GEM” GIA

The rough diamond which yielded the “Unique Pink” was cut and polished by Cora International, known worldwide for rare and unique diamonds of large sizes and vivid fancy colours. According to the GIA, “Although nature is largely to thank for the Unique Pink’s most striking and unusual attributes, the work of its cutter must not go unnoticed. The task of polishing the valuable rough crystal into the sparkling gem it is today required tremendous skill.”

The discovery of any gem-quality pink diamond is extremely rare. Of all diamonds submitted to the GIA each year, no more than 3% are classified as coloured diamonds, and less than 5% of those coloured diamonds are predominantly pink. Upon inspection by the institute, the hue, tone and saturation of the “Unique Pink” was determined to be Fancy Vivid Pink – the strongest saturation possible and described as “absolutely mesmerizing”.

It is exceptionally rare for any natural diamond to reveal Fancy Vivid Pink color, but for one of 15.38 carats to exhibit such tone and saturation is astonishing.” GIA Monograph written for the “Unique Pink”, 2016.

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Lot 495. "The Unique Pink". Vivid pink pear-shaped 15.38 carat Type IIa diamond. Estimate 26,900,000 — 36,500,000 CHF. Sold for 30,826,000 CHF. World auction record price for any fancy vivid pink diamond. Photo Sotheby's.

The pear-shaped fancy vivid pink diamond of outstanding colour weighing 15.38 carats, mounted as a ring, size 51.

Accompanied by GIA report no. 6177101892, stating that the diamond is Fancy Vivid Pink, Natural Colour, VVS2 Clarity; together with a Type IIa classification letter. The GIA report additionally accompanied by a separate monograph expressing the rarity and the characteristics of the stone.

NoteJean-Baptiste Tavernier, a French merchant and adventurer who was best known for acquiring the 'Tavernier Blue Diamond' that he subsequently sold to Louis XIV, first made a reference to pink diamonds in the early 17th century. Tavernier mentioned a very large pink rough diamond weighing over 200 carats, shown to him by Moghuls in the Kingdom of Golconda in 1642. This diamond, named ‘The Grand Table’ and valued at 600,000 rupees at the time, is still the largest pink diamond recorded to date. The French merchant also purchased two pale pink diamonds around 1668 and drew the pictures of the stones in his travel book.

Since the 17th century, the value of coloured diamonds has considerably increased. Fancy coloured diamonds are rarer than near colourless diamonds as their hues come from a disturbance during the formation process of the stone deep in the earth. For all coloured diamonds except pinks, the colour comes from trace elements that interfere during the formation of the crystal. A diamond is composed of pure carbon; it is the intrusion of another atom that causes the colour: nitrogen for yellows, boron for blues. Concerning pink diamonds, the colour is a consequence of a distortion of the crystal structure of the stone.

Fancy coloured diamonds are rare in nature, but the intensity of the colour is also an important characteristic of the stone. The Gemological Institute of America grades fancy coloured diamonds as: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid. Fancy Vivid colours are the most sought-after. The exceptional stone offered in this auction displays a very bright and deep fancy vivid pink colour. Even in the category “Fancy Vivid”, one can find different levels of intensity; the saturation and hue of this stone are absolutely mesmerising.

The current record price ever paid at auction for a pink diamond is ‘The Graff Pink’, a magnificent 24.76 carat Fancy Intense Pink diamond, which sold at Sotheby’s Geneva in November 2010 for $46.16 million.

The current record price per carat for a fancy vivid pink diamond ($2,155,332) was set by a 5.00 carat diamond, sold in Hong Kong in January 2009.

An Exceptional Colour

“Certainly, the occurrence of any gem-quality diamond is rare, but the discovery of a pink diamond is exceedingly unusual. Of all diamonds annually submitted to GIA, no more than 3% are classified as coloured diamonds; less than 5% of those coloured diamonds are predominantly pink. The majority of pink diamonds fall within the tone and saturation ranges of Faint to Fancy – very few contain colour so vibrant as to be Fancy Vivid…

In addition to Fancy Vivid colour and a remarkable weight of 15.38 carats, the Unique Pink was reported to display stunning clarity and exceedingly pure (type IIa) structure. This rare combination of superior qualities allows the Unique Pink to hold the distinction of a truly exceptional gem”.

Excerpt from the GIA monograph

“In one previous GIA study of 1,490 pink diamonds – of which 1,166 were type I and 324 were type II – the diamonds were found to occur in a relatively wide range of colour appearances, from “warmer” orangy pinks to “cooler” purple-pinks… The Fancy Vivid Pink designation is exceptionally rare, but particularly so for a type IIa diamond of such significant size”.

Excerpt from the GIA monograph

“In grading fancy-colour diamonds, the measure of the “C” representing colour far surpasses other “C’s” (clarity, cut and carat weight) in importance”.

Excerpt from the GIA monograph

Manufacturing the Unique Pink Diamond

“Though nature granted the Unique Pink with rare colour and fine purity, it is the responsibility of man to capitalize on these qualities and bring the diamond’s innermost beauty to full display.

The ultimate shape and cutting style of the Unique Pink is described as pear modified brilliant. Examination of the details of the polished form provides some insight into the gem’s growth story and enhances its visual impact. Although the precise appearance of the original rough is unknown, it was likely elongated, as crystals of that form often give way to attractive pear shapes…

The Unique Pink’s pear modified brilliant cut complements its characteristic form and deepens its natural Fancy Vivid tone and saturation”.

Excerpt from the GIA monograph

A Type IIa Diamond

“Type II diamonds are rare… and represent less than 2% of all diamonds mined. Not coincidentally, they also tend to display exceptional transparency. Type II diamonds are subdivided into two groups. Type IIa stones have no nitrogen or boron impurities (and could be considered the “most pure”)… The Unique Pink was identified as type IIa based on analysis of its infrared spectrum. No features were observed in the spectral region from approximately 1400-1000 wavenumbers, where nitrogen-related peaks are expected to occur. This observation indicates that the diamond is exceedingly chemically pure”.

Excerpt from the GIA monograph

“As its name suggests, the Unique Pink is a most distinctive item in the fascinating world of gemstones. It is exceptionally rare for any natural diamond to reveal Fancy Vivid pink colour, but for one of 15.38 carats to exhibit such tone and saturation is astonishing”.

Excerpt from the GIA monograph

In addition to Fancy Vivid colour and a remarkable weight of 15.38 carats, the Unique Pink was reported to display stunning clarity and exceedingly pure (type IIa) structure. This rare combination of superior qualities allows the Unique Pink to hold the disctinction of a truly exceptional gem”.

Excerpt from the GIA monograph

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