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Where Do Pink Diamonds Come From?


  The five "hero" diamonds from the 2015 Argyle Pink Tender, including the Argyle Prim,” a 1.20 carat Fancy Red pear shaped diamond

Rio Tinto owner of Australia’s Argyle Mine is always tight-lipped when it comes to the results of its annual tender of rare pink and red diamonds. But their public statements are always upbeat. Not so much this year.

It’s always difficult to gauge the results of the private sale as the mining company refuses to release figures but the annual press release provided even fewer details of this year’s sale than in prior years.

The 2015 Pink Diamonds Tender collection of 65 rare pink and red diamonds weighing a total of 44.14 carats from its Argyle diamond mine “delivered an exceptional result, reflecting global demand and sustained price growth,” according to a press release from the Rio Tinto mining company. However, statement falls short of defining why it was “exceptional.”

About 90 percent of the entire world supply of rare pink and red diamonds comes from the Argyle diamond mine in the remote east Kimberley region of Western Australia. The Argyle pink diamond is one of the few gemstones identified by its unique origins with a color range. In recent years, the annual sale of these gems included blue diamonds from the Argyle mine in a separate tender.

In addition to their beauty, rarity and provenance, the mine’s output of these diamonds is near its capacity and the mine is scheduled to close in 2020. So the diamonds being sold now will likely become even more valuable.

Posted from Jewelry News Network, online 11/17/15

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