The "Ocean Dream," a 5.5-carat blue-green diamond, has sold for $17.3 million at a Christie's auction in Geneva. This price sets a new record for a diamond of its kind. The stone, discovered in Central Africa in the 1990s, attracted significant interest from a private buyer, selling for more than double its previous auction price in 2014. AI
RANK_REASON A record-breaking sale of a unique, high-value gemstone. [lever_c_demoted from significant: ic=1 ai=0.0]
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