Rose diamond from exceptional stones.
First of all, diamonds are a fabulous and mythical stone. Therefore, pink diamonds are among the rarest and most sought-after precious stones in the jewelry world. Their unique color and rarity make them coveted objects for collectors and lovers of beautiful jewelry.

First of all, the carbon that makes up diamond is a common chemical element on Earth. So, how can black and common carbon turn into diamond? How is it possible that a simple graphite crayon mine has the same chemical formula as diamond?
In fact, it is heat and intense pressure that creates diamonds. This is what happened at the time of the creation of the Earth. It should be noted that the almost perfect arrangement of the carbon atoms in the diamond is composed each time of 4 bonds, thus forming a very solid 3D network. There are only 3 in the case of graphite, which has a flat sheet system network. Moreover, indestructible, impenetrable to acids, diamonds have long been called in Greek Adamas, the indestructible.
However, it breaks easily along a cleavage axis. This is due to small gaps left between the bond links. In a way, it’s a forgetfulness of nature.

When we talk about diamonds, we often think of white diamonds, but there are also colored diamonds: blue, green, yellow, red or pink.

© Sotheby’s
In this regard, the sale of the already famous Vivid Pink diamond from October 7 at Sotheby’s Hong Kong gives me the opportunity to talk about colored diamonds, more specifically the Rose color.
It should be noted that this exceptional stone, with its weight and color, reached an incredible price of 17,768,041$! It comes from a mine in South Africa, operated by the De Beers holding company.

© Sotheby’s
Increasingly sought after by collectors, colored diamonds are rare, even more so for pink and red. In fact, it is commonly said that the most beautiful pink and red diamonds come from the Argyle mine in Australia. In other words, this mine is the world’s leading producer of pink diamonds. It produces more than 90% of the world’s production.

© Rio Tinto Diamonds
It belongs to the Rio Tinto group, located in the Kimberley region, in the north of Australia.
It should not be forgotten that it is necessary to extract 1 million carats of rough diamonds to obtain only 1 carat for sale. The most important aspect is that these diamonds are of very high quality.

© Rio Tinto Diamonds

© Rio Tinto Diamonds
Moreover, the prices are 50 times higher than the price of a white diamond.
Furthermore, the pink color is due to tensions in the crystalline structure, called “graining” in gemology. This means parallel lamellae between each other in the matrix, as well as the presence of hydrogen atoms that give the pink color. Surprisingly, this color still does not reveal all its secrets.

Production 2014
© Rio Tinto Diamonds
However, an Arbogine legend gives another explanation.
The pink diamonds were created on a day when 3 women tried to catch a fish called «Barramundi”. But it was too fast and escaped and landed at the mine site. Thus, the native people believe that the pink diamonds are the heart of this fish.

2014 Collection
© Rio Tinto Diamonds
The most important appointment regarding pink diamonds is undoubtedly the emblematic Diamonds Tender Rose Argyle The annual Rio Tinto event. It is the best of the year’s production of red and pink diamonds. This rare moment takes place in Hong Kong at the end of September, it is the final stage of a worldwide tour.
Moreover, it is his General Manager, Jean-Marc Lieberherr, who speaks best about it.
«It’s fantastic to be in Hong Kong and to see the excitement around the «Trend of the Year» collection. The rarity, beauty, craftsmanship, and very special location are a powerful combination for collectors and jewelry connoisseurs alike.».

Size Radian 1.21 carat
2014 Collection
© Rio Tinto Diamonds
It is worth noting that in this collection there are 4 red diamonds, including the «Argyle Cardinal» which is a spectacular diamond, with a radiant 1.21 carat. And the «Argyle Toki» is an intense, purplish pink fancy diamond, with a 1.59 carat emerald cut. It is named so after the «Toki», a rare Japanese bird that has a delicate pink feather under its wings (pictured above).

Production 2014
© Rio Tinto Diamonds
To sum up, what would stones be without color and nuances? Ultimately, pink diamonds remain fascinating, coveted, and mysterious precious stones.
My thanks to Sotheby’s Presse France
My thanks go to Argyle Mine, Rio Tinto Diamonds, thanks go to Sylvia Chapman