The fabled pink diamond Darya-i-Noor
Pink diamonds were already in the 17th century when the Moguls in India of very popular. Respect has been proven the Darya-i-Noor – a pink diamond – gem. His name means “Sea of light” and it is actually to an extraordinary gem: the pale pink diamond is one of the largest in the world with a weight of about 182 carats. He comes from the Paritala-Kollur mine in the State of Andhra Pradesh, which belongs to the Golconda mines. 1739 invaded the Iranian Shah Nader in North India and since then the pink diamond is part of the Iranian Crown jewels.
Sensational discovery of the Argyle pink Jubilee in Australia
A 12,47-karätiger pink diamond was found in the Argyle mine in Australia in the fall of 2011 by the mining company Rio Tinto. This discovery was particularly spectacular, as pink and Pink diamonds are a great rarity.
There so far in Indonesia, Tanzania, India and Brazil were scant finds of Pink diamonds. The Australian Argyle mine occupies a special position: Here you can discover regularly pink or Pink diamonds – 90% of these gems around the world. The share of Pink diamonds of total production of the mine is still only about 0.1%. Usually a pink diamond from the Argyle mine is relatively small, what Argyle pink anniversary with its impressive size makes a peculiarity.
This pink diamond was named after the British Queen Elisabeth II., pink in a very similar color was given a still larger, 24 k diamond named Williamson to her wedding in 1947. Queen celebrates her 60th – so Diamond – Jubilee this year. So was the pink diamond Argyle pink Jubilee baptized.
He is by the renowned grinder Richard How Kim was edited, which itself has prepared for months with sketches and calculations on this work. He had to consider in its deliberations that the pink diamond loses as little as possible by its size, but at the same time its color and its brilliance optimally is brought to the fore. In addition, a pink diamond is harder to edit than a colorless because it breaks more easily. For this reason, the pink diamond without use of machinery and only with hand tools is ground.
The Argyle Diamond Mine in Australia
The Argyle Diamond Mine is located in the Kimberley region of Northern Western Australia and was harnessed in 1985. Today, the Rio Tinto Group is its sole owner. The largest quantity of diamonds produced worldwide in the mine, however, is their most not for jewelry, but is used for industrial purposes.
A special feature of this mine is that the diamonds do not originate from the usual kimberlite vent but from Lamproit vent. The diamond of mine among the world due to its unusually complex structure of atoms to the hardest.
A particularly high color intensity records which pink and Pink diamonds from the Argyle mine, which also founded in the arrangement of the atoms.
The pink diamond and the secret of its colour scheme
While the emergence of color in yellow, green and Blue diamond is largely resolved, throw pink or Pink diamonds still have questions. There are research into the exact conclusion of color running, some facts are already einvernehmend.
The pink diamond does not get its color in contrast to the other diamonds in the majority of cases by retention of other elements from the periodic table.
Gemmologist assume that the crystal lattice will be deformations of a pink diamond. Probably as a result, these shall that numerous carbon atoms are moved due to very high temperatures and enormous pressure from all sides from its original location. It is believed that changes to the absorption spectrum of the diamond and the reflected light is therefore a pink coloring takes.
These structural features are referred to as “pink graining” with a pink diamond. The closer the various “graining” levels are together, the color effect is more saturated.
Both on pink and Pink diamonds, as also on red and purple to meet these characteristics too, since they closely resemble themselves in their construction. The “pink graining” occurs in parallel thin layers, which are otherwise as good as colorless crystal.
This group has a strip of absorption at 550 nm, which is responsible for the pink to red hue in the majority of cases.
The exact causes for the emergence of color and the reason why purple diamonds, also a strip of absorbance at 390 nm exists, are still puzzling researchers.
This characteristic absorption band – the case with Pink diamonds from the old ruins of Golconda in the State of Andhra Pradesh is missing some Pink diamonds. There, the colour is generated by retention of nitrogen.
In any case, a pink or pink diamond is due to its rarity of high value and there are only a few lucky owner of this gemstone. Since 1984 the Pink diamonds from the Argyle mine are shown in New York, Antwerp, Hong Kong or London. Only selected jewelry stores that have received an invitation, may participate on the subsequent auction.
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