The Dresden Green diamond is a 41 carats (8.2 g) natural green diamond that has a historical record dating to 1722, when a London news-sheet carried an article about it in its 25 October-27th edition.[1]
It is named after the capital of Saxony, Germany where it has been on display for most of the last two centuries. In 2000, American jeweler, Harry Winston arranged to display the Dresden Green in their New York Grand Salon and then at the Smithsonian in Washington DC, USA , where it was displayed in the Harry Winston pavilion next to the largest blue diamond in the world, the Hope diamond.
The stone's unique green color is due to natural exposure to radioactive materials (see Diamond enhancement#Irradiation). The stone is being used to compare natural versus lab-produced green diamonds — it is hoped that it can be used to devise a test to differentiate between naturally green diamonds, which are quite rare, and lab-produced ones.[2]
This diamond is located in the Staatliche Kunstsammlungen Dresden "The New Green Vault" [3]
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