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Top 10 most expensive diamonds in the world

Published 21 Mar, 2017 15:56 | Updated 21 Mar, 2017 15:57

Top 10 most expensive diamonds in the world

Sotheby's auction house in London displayed what is expected to be the world’s most expensive cut diamond, the Pink Star, due to be auctioned in Hong Kong in April 2017. RT looks at some of the most expensive rocks out there.

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