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Sotheby’s unveils 100-carat ‘perfect’ diamond
![](https://www.jewelleryfocus.co.uk/wp-content/uploads/2015/02/9331-100C-Purple-Front-e1423829115214.jpg)
Today global art business Sotheby’s has unveiled a 100-carat ‘perfect’ diamond, which is set for auction later this year.
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