RAPAPORT… De Grisogono purchased the rights to the world’s most
expensive rough diamond, the Constellation, it announced at the launch of the
28th Biennale des Antiquaires in Paris.
The Switzerland-based jeweler entered into a partnership
with Dubai-based Nemesis International which bought
the 813-carat diamond from Lucara Diamond Corporation for $63 million in May following
a competitive …
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