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France: Huge 'Constellation' diamond unveiled
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Video. France: Huge 'Constellation' diamond unveiled

In a Paris exhibition, Swiss jewellery maker de Grisogono unveils an 813-carat unpolished diamond bought for $68 million (around 60 million euros), the world’s most expensive rough when it was purchased.

In a Paris exhibition, Swiss jewellery maker de Grisogono unveils an 813-carat unpolished diamond bought for $68 million (around 60 million euros), the world’s most expensive rough when it was purchased.

Canadian miner Lucara Diamond sold the stone after unearthing it in Botswana last year.

It has been named ‘Constellation.’

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