Sotheby’s Hong Kong is presenting an extraordinary natural treasure and one of the most valuable blue diamonds ever to be offered at auction, the De Beers Cullinan Blue, at a standalone auction in Hong Kong, coming up on April 27, 2022 and bearing Lot No. 1800. Two days after this on April 29, 2022, a [...]
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Source: https://internetstones.com/new…-auction-27th-april-2022/
