From November to December, the autumn auctions of major auction houses began one after another. On November 14, a flawless diamond weighing 163.41 carats, and the largest D-color diamond emerald necklace in the history of hundreds of years of auction, was sold for US$33.7 million at the "Great Jewelry" auction in Christie's Geneva "Great Jewelry" auction, equivalent to RMB 223 million, with a unit price of US$206,266 per carat, and set the latest auction record for the D-color flawless diamond auction.
carat unit price is amazing, but it is a terrible thing in front of Yiba Pink Diamond in the auction. On November 28, a 14.93 carat oval colored pink diamond Pink Promise was sold for US$32 million at Christie's Hong Kong Autumn Auction, equivalent to RMB 210 million, setting a record for transactions in Christie's jewelry in Hong Kong. The unit price per carat is as high as US$2.14 million, just one step away from the world auction record of powder diamonds per carat.
This pink diamond seller is Stephen Silver, a diamond collector from Silicon Valley. In 2013, he bought the thick pink diamond with an original weight of 16.1 carats. The subsequent redesign and cutting caused some areas to be lightened and finally polished to a 14.93 carat Pink Promise.
The Pink Diamond Auction is The Vivd Pink (Yingcai Pink) sold at the Christie's autumn auction in Hong Kong on December 1, 2009, with an average of US$2.155 million per carat. Looking through the history of jewelry auctions, pink diamonds are the well-deserved king of jewelry auctions. In the most expensive category, the top-notch Fancy Vivid Pink diamonds have increased by more than 14% per year since 2005, and the price of other varieties of pink diamonds has increased by more than 13% per year. Since pink diamonds are so valuable, how much do you know about pink diamonds?
The cause of pink diamonds?
Graff Pink
Different color diamond color causes different colors. For example, the yellow and blue of diamonds are caused by the impurities nitrogen and boron in diamonds, respectively, while the color causes of pink diamonds are still unknown. Compared with the foreign impurities that make pink diamonds color, the current mainstream view believes that the huge underground pressure changes the crystal structure of pink diamonds, which is why it produces pink. How to divide the color levels of pink diamonds in
?
As we all know, color diamonds are better for colored diamonds without other tones, while pink diamonds with purple tones are the exception. This is the only color diamond that has a variegated tone and can be priced at the same level of solid color pink diamonds.
Currently, the color diamond color grading rules are formulated by the American Gem Research Institute (GIA). According to the GIA color grading standards, the color concentration level of natural pink diamonds, from low to high, is:
. Natural pink diamonds often contain variegated tones such as purple, brown, light gray, orange, brown orange and brown purple. The following figure lists the color combinations of most of the currently known pink diamonds.
From left to right:
First row: medium color powder with purple with light brown, light color powder with light brown, medium color powder with light brown, deep color powder with light brown, light pink with brown, medium color powder with brown, deep color powder with brown, medium color orange with light brown, medium color orange with light brown
Second row: medium color powder with orange with light brown, deep color powder with orange, light color powder with orange, light color powder with orange, medium color powder with orange, thick color powder with brown, thick color powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with orange, colorful powder with The third row of the thick color powder with dark brown
: deep color powder with orange, micro powder, light powder, light powder, light color powder, medium color powder, thick color powder, colorful powder, colorful powder
The fourth row: deep color powder, medium color powder with purple, colorful powder with purple, colorful powder with purple, deep color powder with purple, medium color powder with purple, medium color powder with purple, medium color powder with light purple , thick color powder with light purple
The fifth row: bright color powder with light purple, deep color powder with light purple
Why are pink diamonds rare?
Before the discovery of the Argyle Pink Diamond Mine in Australia, the largest known powder diamond deposit in the world, India, South Africa, and Brazil , and occasionally produced powder diamonds, but it did not reach the scale that was available for commercial mining. The average annual output of pink diamonds in the Argyle mining area is 8,000,000 carats, of which only 1% of pink diamonds can reach gem grade, while most of the pink diamonds have lower overall quality, so high-quality gem grade pink diamonds are very few.
Pink and red diamonds produced in the Argyle mining area
The Argyle mining area began to be mined in 1985. Currently, the mining area belongs to the British and Australian mining giant Rio Tinto Group. Rio Tinto Group said that the Argyle mine has switched from open-pit mining to underground mining since 2008. From 2007 to 2018, the annual output of underground mines was only 60% of the original output. It is estimated that the mine has only more than ten years of supply of pink diamonds.
080s real scene of Argyle mining area
How expensive is the 40km-long underground tunnel built in the mine
pink diamond?
Diamond price evaluation is affected by many factors. For example, two color diamond with similar appearances can have a very different price due to the slight difference in color intensity. Therefore it is difficult to list a different level of diamond quotation list for natural pink diamonds like colorless diamonds.
In order to give everyone a general understanding of the price of pink diamonds, the editor has roughly sorted out the approximate price ranges of different pink diamonds (for reference only)
Note: The unit price of carats will increase in the index as the size of pink diamonds increases, because the larger the pink diamond becomes, the more rare it is. Therefore, the price of a 1.00-carat pink diamond will be much higher than the unit price of a 0.20-carat pink diamond.
