The three diamonds dubbed the “Diavik Stars of the Arctic” are, from left to right, the 177.71 carat “Vega,” the 24.82 carat “Capella” and the 59.10 carat “Altair.” Rio Tinto is offering the diamonds via tender, with bids closing later this month.
Known collectively as the “Stars of the Arctic,” the biggest of the three is “Vega of the Arctic,” a 177.71 carat rough diamond Vega Arctic Rough Diamondthat Rio Tinto said is one of the largest and most valuable gem quality diamonds to ever come out of Canada.
ALROSA subsidiary JSC Almazy Anabara has recovered a 28.59 carat rough diamond of deep greenish yellow hue the biggest yellow found so far this year.
ALROSA said that following an appraisal, the color of the stone has been determined as fancy intense yellow.
The diamond, discovered at Ebelyakh placer deposit in July, has dimensions of 11.40 x 19.00 x 17.50 mm, and has “insignificant colorless inclusions on the surface,” the miner said.
“This stone is unique because nature seemed to have prepared it for cutting in advance and gave it a pear-like shape,” said Evgeny Agureev, a Member of the Executive committee, and Director of the United Selling Organization of ALROSA.
The United Selling Organization and the company’s cutting division, DIAMONDS ALROSA, have yet to study the diamond and decide whether to auction it as a rough stone or to cut and polished it.
The Almazy Anabara is a leader in producing fancy colored stones. In 2017, it produced a 27.85 carat pure pink diamond the largest pink stone in ALROSA’s history, and a large 34.17 carat vivid yellow diamond.
ALROSA plans to focus its cutting division on the processing of large and colored diamonds and the subsequent sales. Starting this year, ALROSA has been sorting colored diamonds according to a new technology, that includes almost all hues and color grades. Most of these diamonds are processed by DIAMONDS ALROSA the company’s polished diamond unit.
ALROSA produces at least 7,000 carats of colored diamonds per year. In September, it held a True Colors auction in Hong Kong, where it showcased a collection of 250 diamonds of different shapes and hues. The company said it plans to run such auctions regularly.
Sotheby’s brought in a total of $40.2 million at its Hong Kong auction Wednesday as a 5 carat blue diamond fetched $13.8 million.
The price of the step cut, fancy vivid blue, named the Ai diamond, after the Chinese word for love, fell within its estimate of $12.5 million to $15.3 million. The final selling price translated to $2.8 million per carat.
Another blue diamond a pear shaped, fancy intense blue weighing 3.47 carats sold for $3.1 million at the Magnificent Jewels and Jadeite auction against a pre-sale estimate of $2.7 million to $3.6 million. A step cut, 18.45 carat, D color, VVS2 clarity diamond ring fetched $2.3 million, smashing its estimate of $1.3 million to $1.7 million.
However, only one piece out of a collection of jewels by designer Wallace Chan found a buyer: a pair of jade and diamond earrings, estimated at $70,160 to $108,430, which went for $87,700.
Several jewels by Harry Winston, Van Cleef & Arpels and Cartier also sold at the auction.
Rio Tinto has revealed its 2018 Argyle Pink Diamonds Tender in New York, including the Argyle Muse, the largest purplish red diamond ever offered.
The Argyle Muse, a 2.28-carat oval shaped Fancy Purplish Red gem, is one of 63 diamonds weighing a total of 51.48 carats being tendered at the event.
Argyle in Western Australia is the world’s only consistent source of rare pink, red and violet diamonds.
The 2018 tender is named Magnificent Argyle in honour of the mine’s role in charting the history of the world’s most coveted diamonds.
Rio Tinto copper and diamonds chief executive Arnaud Soirat said New York was the epicentre for rare fancy coloured diamond collectors and a key market for gems from Argyle.
“This is our 34th Argyle Pink Diamonds Tender and the potency of colours in this collection is a testament to the extraordinary Argyle ore body – rare fancy coloured diamonds, created and limited by nature.” Soirat said.
“The combination of strong demand and extremely limited world supply continues to support significant value appreciation for these stunning diamonds.”
The tender includes five Fancy Red diamonds, two Purplish Red diamonds and three Violet diamonds.
It includes six hero diamonds, which Rio Tinto selected for their unique beauty and were named to ensure a permanent record of their contribution to the history of Argyle’s diamonds.
Rio Tinto and Dominion Diamond Mines have revealed three of the finest large rough diamonds from their Canadian diamond mine that will be tendered to diamond specialists from around the world.
Collectively known as The Diavik Stars of the Arctic, the three rough diamonds showcase a rare combination of size, quality and color from the Diavik diamond mine in the remote Northwest Territories of Canada, 220 kilometers south of the Arctic Circle, the miner said in a statement.
The Diavik Stars of the Arctic will headline Rio Tinto’s forthcoming “Specials” Tender, which showcases rough diamonds greater than 10.8 carats. Taking their inspiration from constellations across the night skies of the North.
The Diavik Stars of the Arctic comprised of the, Vega of the Arctic, 177.71 carats, one of the largest and most valuable gem quality rough diamonds ever produced in Canada , Altair of the Arctic, 59.10 carats, a white gem quality rough diamond Capella of the Actic , 24.82 carats, a yellow diamond
Diavik Diamond Mines president and chief operating officer Patrick Boitumelo said, “Diavik diamonds are over two billion years old and it has taken 15 years of production to unearth these extraordinary diamonds, underscoring the ongoing importance of the Diavik ore body in the context of the global diamond industry.”
The Diavik Diamond Mine owned by Rio Tinto 60 per cent and joint venture partner Dominion Diamond Mines (40%) began production in 2003 and has been a fully underground mining operation since 2012. It recently opened its fourth pipe, the A21 pipe, which will provide an important source of incremental production.
The Diavik mine produces predominantly gem quality diamonds destined for high end jewelry in all major consumer markets around the world. The discovery of Lot 3, Capella of the Arctic, a large yellow diamond is very rare, with the mine on average producing only five of these diamonds each year, in effect less than 0.001% of annual production.
The Diavik Stars of the Arctic will be showcased in Antwerp and Israel to large diamond specialists from around the world before bids close on October 25.
HRD Antwerp, a leading European authority in diamond certification, recently undertook a study entitled “The Effect of Fluorescence on the Colour of a Diamond”, concluding that even strong fluorescence does not negatively impact a diamond’s appearance. In fact, their findings demonstrate the contrary: under normal conditions and even when outdoors, strong fluorescence has a positive influence on the color of diamonds. This finding directly contradicts the common perception that fluorescence is a negative property of diamonds, driving down their value. Given HRD Antwerp’s findings, they conclude there is no justification for the price penalties that currently apply to fluorescent diamonds.
Fluorescence, along with the 4Cs (carat weight, clarity, color and cut) is an important characteristic of a diamond and influences its value. Typically, in the diamond trade, it is perceived as a negative property, which drives the value of fluorescent diamonds down. HRD Antwerp’s study found this common perception is not justified. To make this determination, the lab set out to identify how fluorescence influences the color grading results by gemologists in standard laboratory environments, as well as to assess how fluorescence influences the visual appearance of a diamond for regular consumers. The latter was in fact the main purpose of the study: to determine the impact on the appearance of a mounted diamond as observed by an end consumer.
The experiments HRD Antwerp conducted in its laboratory revealed several significant points, foremost of which is that diamond fluorescence has no influence on the color grading of a diamond in a laboratory environment, due to the insignificant UV content in conventional grading lamps. In short, fluorescence should not lower the official color grade. Furthermore, conventional grading through the pavilion (lower half) of a diamond in outdoor conditions actually improves the color grade for diamonds with a fluorescence grade above ‘medium’. As an example, a diamond graded in the HRD Antwerp laboratory as a J color with very strong fluorescence can appear as a D color when examined in outdoor conditions. When the diamond is examined through the table (face up), there is still an improvement in color, although this change is less significant.
The results of HRD Antwerp’s study thus support findings from earlier studies conducted by other labs, adding additional objective assessments. It confirms that even very strong fluorescence has no detrimental effect on the appearance of diamonds in a laboratory setting, and when viewed through the pavilion in outdoor conditions, it results in a clear improvement in a diamond’s color. For the wearer or casual observer, fluorescence has a neutral or even positive impact on the appearance of a diamond, making it appear to be more colorless. Given these observations, HRD Antwerp concludes there are no grounds on which to justify the price penalties that currently apply to fluorescent diamonds.
The largest and finest fancy vivid pink diamond ever offered at auction by Christie’s it’s about to go under its hammer in Geneva, with experts expecting it to fetch a record price of between $30 million and $50 million.
The Pink Legacy was once owned by the Oppenheimer family, the former owners of De Beers.The rectangular cut diamond, named Pink Legacy, was once part of the Oppenheimer collection, Christie’s said, referring to the family who built De Beers into the world’s No. 1 diamond producer.
It’s rated “vivid”, which is the highest rating for a diamond’s colour, as it displays the optimum hue of the stone. At 18.96 carats, is also the largest fancy vivid pink diamond Christie’s has ever offered and it would lead its Magnificent Jewels auction in November.
“To find a diamond of this size with this colour is pretty much unreal,” Rahul Kadakia, International Head of Jewellery at Christie’s said in a statement. “You may see this colour in a pink diamond of less than one carat. But this is almost 19 carats and it’s as pink as can be. It’s unbelievable.’
Scientists classify diamonds into two main “types” Type I and Type II. In the latter, the diamond has a particularly rare, almost homogenous colour. “Pink diamonds fall under the rare Type IIa category of diamonds,” Kadakia said. “These are stones that have little if any trace of nitrogen, and make up less than two per cent of all gem diamonds. Type IIa stones are some of the most chemically pure diamonds often with exceptional transparency and brilliance.”
Pink Diamonds have been fetching record prices at auctions. The 59.6 carat Pink Star diamond, in fact, sold for $71.2 million in April last year, becoming most expensive gem ever sold that way.
In November, another pink rock set in a ring embellished with smaller diamonds sold for about $32 million at Christie’s in Hong Kong after a three-minute contest.
The Pink Legacy will be shown in Hong Kong, London and New York before being auctioned in Geneva on Nov. 13.
Lucapa Diamond Company will sell six large stones weighing a total of 449 carats from its Lulo mine in Angola after an overhaul of the nation’s mining laws prompted it to delay the sale, it said.
The Angolan government introduced reforms to its diamond sector in the first half of the year to help boost foreign investment. Those measures included a new marketing policy for Angolan diamonds, and the option of offering goods for sale in locations such as Antwerp.
Anticipating the changes, Lucapa has been holding back a selection of large stones from previous sales, and will now sell them under the new policy, it explained Friday. These include six type IIa white diamonds weighing 114 carats, 85 carats, 75 carats, 70 carats, 62 carats and 43 carats, as well as a 46-carat pink diamond.
“The discussions with our Angolan partners regarding the policy changes taking place in the Angolan diamond sector have reached a stage where we are now able to plan for the sale of these large, premium-value Lulo diamonds held over from previous sales,” Lucapa managing director Stephen Wetherall said. “We look forward to marketing these exceptional diamonds as soon as the necessary arrangements are put in place to continue showcasing Angolan diamonds to the world.”
The decision to delay the tender for those stones had a negative impact on Lucapa’s first-half results, the company added. Its losses grew to $4.6 million for the period, versus a loss of $1.2 million a year earlier.
Even so, Lucapa’s sales rose 3% year on year to $15.9 million in the first half, while production for the same period climbed 15% to 9,566 carats. The average price of rough diamonds from Lulo rose 1% to $1,642 per carat. Rough-diamond inventory from the asset grew 61% year on year to 2,755 carats as of June 30, the miner reported.
Lucapa’s most recent sale of 2,531 carats of rough from Lulo fetched $2.5 million, achieving an average price of $985 per carat, the company noted.
Chinese corporate giant Fosun has agreed to buy an 80% stake in the International Gemological Institute (IGI), the grading laboratory said Wednesday.
“The interest of this large conglomerate to invest in IGI shows the confidence it has in our industry,” said Roland Lorie, IGI’s CEO. “As demand for certification increases, the investment…will significantly accelerate our core business, offering and presenting many new opportunities all over the globe.”
Fosun will implement the acquisition through Yuyuan, its holding company for the consumer sector, IGI explained. The Lorie family will retain a 20% interest, with Roland Lorie still managing the company. Marc Brauner, who was previously Lorie’s co-CEO, has left IGI after 30 years with the group. The parties did not release any further financial details.
Antwerp-based IGI, founded in 1975, operates 23 laboratories and schools around the world. Fosun is one of China’s largest corporations, spanning the financial, health-care, pharmaceuticals, consumer, real-estate, mining and energy industries, with Club Med and Cirque du Soleil among the brands it owns. It bid to acquire Gemfields last year, but lost out to Pallinghurst Resources.
“IGI has built great fundamentals and human capital over the years, with highly respected expertise and input from both the Lorie and Brauner families,” said Xu Xiaoliang, executive director and copresident of Fosun and chairman of Yuyuan. “We believe IGI is well positioned to bring its gemological knowledge and expertise to emerging markets, including China.”
Do you know the Martian Pink from the Perfect Pink, the Sweet Josephine or the Pink Promise? Christie’s jewellery specialist Marie-Cécile Cisamolo tells the stories of these and other fabulous pink diamonds that have bedazzled our salerooms
Prices for top-quality, large pink diamonds have increased exponentially in recent years, driven by collector demand and increasingly limited supply. Pink diamonds gain their highly desirable colour as a result of a rare, naturally occurring slippage of the crystal lattice in the stone while it is forming deep within the Earth’s crust. Here we take a look back at some of the biggest and the best stones and pink diamond rings sold at Christie’s in recent times.
1
A Fancy Vivid Pink rectangular-cut diamond, 5.18 caratsSold for $10,709,443 in 2015
Set on a lady’s ring with a unique oval-shaped, gold-mounted diamond surround, this pink stone was the star lot of Christie’s Magnificent Jewels sale in May 2015 in Geneva.
A magnificent coloured diamond ring. Sold for CHF 10,021,000 on 13 May 2015 at Christie’s in Geneva
Because fewer than 10 per cent of pink diamonds weigh more than 0.2 carats, this example, at 5.18 carats, sold for almost a million dollars more than its low estimate.
2
The Vivid Pink, a Fancy Vivid Pink diamond, 5.00 caratsSold for $10,776,660 in 2009
Flanked on either side by shield-shaped diamonds, this pink stone is set on a platinum and 18k rose gold ring designed by the British jeweller Graff. When it went under the hammer in Hong Kong, ‘The Vivid Pink’ sold for more than double its low estimate and achieved the highest price ever paid per carat for a pink diamond at the time ($ 2,155,332). The record remained unbeaten until the sale of ‘The Pink Promise’ by Christie’s in 2017.
The Vivid Pink, an exquisite coloured diamond and diamond ring, by Graff. Sold for HK$83,540,000 on 1 December 2009 at Christie’s in Hong Kong
This example is certified ‘IIA’ by the Gemological Institute of America — meaning it has a particularly rare, almost homogenous colour.
3
The Grand Mazarin, a Light Pink brilliant-cut diamond, 19.07 caratsSold for $14,461,250 in 2017
This square-shaped diamond, which is a particularly light shade of pink, was given by Cardinal Mazarin to Louis XIV in 1661. It then spent 225 years as part of the French crown jewels, passing through the hands of four kings, four queens, two emperors and two empresses, before its 1887 sale when the royal treasury was dispersed and its whereabouts became unknown.
Le Grand Mazarin — an historic coloured diamond. Sold for CHF 14,375,000 on 14 November 2017 at Christie’s in Geneva
In 2017, while on a site visit to a client’s house, ‘Le Grand Mazarin’ was revealed from inside an old parcel paper to Christie’s jewellery specialist Jean-Marc Lunel. ‘Holding such an important piece of French royal history in my hands was unbelievable,’ he would later recall of the historic diamond’s rediscovery.
4
The Clark Pink, a Fancy Vivid cushion-cut purplish-pink diamond, 9.00 caratsSold for $15,762,500 in 2012
Stored in a bank vault since the 1940s, this unique purplish-pink diamond is set in a Belle Epoque ring made by Dreicer & Co. and formerly belonged to the reclusive American mining and railroad heiress, Huguette M. Clark. When it sold for almost double its upper estimate in 2012, it became the most expensive pink diamond ever seen at auction in the United States.
The Clark Pink. A Fancy Vivid, cushion-cut purplish-pink diamond, 9.00 carats. Sold for $15,762,500 on 17 April 2012 at Christie’s in New York
The ring was the top lot of a collection of 17 of Clark’s jewels that were auctioned by Christie’s, which also sold her collection of paintings by artists including Monet, Renoir and Whistler, two years later.
5
The Martian Pink, a brilliant-cut Fancy Intense Pink diamond, 12.04 caratsSold for $17,395,728 in 2012
Mounted on an 18k gold ring by the famous New York jeweller Harry ‘King of Diamonds’ Winston, this ring was nicknamed ‘The Martian Pink’ by his son Ronald, who was inspired by the 1976 launch of a US satellite to photograph the ‘red planet’ Mars, and the stone’s similar strong pink colour.
A coloured diamond ring, by Harry Winston. Sold for HK$135,060,000 on 29 May 2012 at Christie’s in Hong Kong
The Martian was certified as having virtually no nitrogen in its crystalline structure and unlike most pink diamonds, which exhibit tones of purple, orange or grey, it shows absolutely no trace of any secondary colour. As a result, it sold for more than double its low estimate when it went under the gavel in Hong Kong in 2012.
6
A Fancy Vivid Pink pear-shaped diamond, 9.14 caratsSold for $18,174,632 in 2016
Only a few mines in the world produce pink diamonds, and of those diamonds that are cut and polished only one in roughly 10 million will possess a colour pure enough to be graded ‘Fancy Vivid’.
A rare coloured diamond ring. Sold for CHF 18,127,500 on 15 November 2016 at Christie’s in Geneva
This large example, which is mounted between tapered baguette-cut diamond shoulders on a platinum ring, was certified Fancy Vivid in June 2016 by the Gemological Institute of America, helping it push past its top auction estimate and achieve more than $18 million when it sold in Geneva in the same year.
7
The Perfect Pink, a Fancy Intense rectangular pink diamond, 14.23 caratsSold for $23,165,968 in 2010
At the time of this stone’s sale in 2010, it was one of only 18 pink diamonds weighing more than 10 carats to have ever appeared at auction. And of those 18, none apart from this diamond had ever been graded Fancy Intense Pink at the time of its sale, which placed it in a league of its own.
The Perfect Pink, a superb coloured diamond and diamond ring. Sold for HK$179,860,000 on 29 November 2010 at Christie’s in Hong Kong
Flanked on either side by two clear diamonds mounted in 18k rose gold and white gold, the pink diamond sold for almost 30 per cent more than its upper estimate when it appeared in the Hong Kong saleroom, demonstrating a strong demand for coloured diamonds in Asia.
8
The Sweet Josephine, a cushion-shaped Fancy Vivid Pink diamond, 16.08 caratsSold for $28,523,925 in 2015
Mounted in a diamond twin-surround and with a diamond-set hoop, this ring set a new world-record price for any pink diamond when it sold at Christie’s in Geneva in 2015. Owned by an American family for 15 years prior to the sale, the stone was, at the time, the largest cushion-shaped pink diamond classified as Fancy Vivid Pink to ever come to auction.
The largest cushion-shaped Fancy Vivid Pink diamond at auction. Sold for CHF 28,725,000 on 10 November 2015 at Christie’s in Geneva
After the sale the diamond, which sold for around $5.5 million more than its lower estimate, was named ‘The Sweet Josephine’ by the winning bidder in honour of his seven-year-old daughter.
9
The Pink Promise, an oval-shaped Fancy Vivid Pink diamond, 14.93 caratsSold for $32,480,500 in 2017
This pink stone, with its circular-cut diamond surround featuring more pink diamonds and a platinum ring, set a new price-per-carat world record for any pink diamond when it sold in 2017 — a whopping $2,175,519.
A rare coloured diamond and diamond ring. Sold for HK$249,850,000 on 28 November 2017 at Christie’s in Hong Kong
The diamond’s initial grading was Fancy Intense before the jeweller, Stephen Silver, cut it down from 16.21 to 14.93 carats in 2013, shaving off areas of inclusions after years of detailed planning. The resulting stone was upgraded to the much rarer Fancy Vivid category, the highest possible colour mark for pink diamonds.
10
The Princie, a cushion-cut Fancy Intense Pink diamond, 34.65 caratsSold for $39,323,750 in 2013
The Princie pink diamond was discovered about 300 years ago in India, and was initially owned by the Nizams of Hyderabad. It was first auctioned in 1960, where it was purchased for £46,000 by Van Cleef & Arpels. The diamond was promptly named ‘Princie’, and the house threw a christening party for the stone in its Paris showroom.
The Princie Diamond. Sold for $39,323,750 on 16 April 2013 at Christie’s in New York
Of the seven million diamonds that have passed through the Gemological Institute of America, no more than 40 have exhibited a rare orange glow when examined under ultraviolet light, and the Princie is the largest of all of them. This fluorescent quality pinpoints the stone’s origin to the Golconda mines of India.
As it is the largest Golconda-type Fancy Intense pink diamond to ever be graded by the GIA, it’s little wonder that it sold for almost $40 million when it appeared in the sale room in New York in 2013, making it the most expensive pink diamond ever sold at Christie’s — a record it still holds.
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