At Christie's auction in Geneva, the 'Ocean Dream,' a 5.5-carat triangular-cut fancy vivid blue-green diamond, was sold for a staggering $17.3 million, marking a record price for such a stone. Discovered in Central Africa during the 1990s, the diamond's sale surpassed its presale estimate of 7-10 million francs (around $9-13 million), demonstrating heightened interest in rare colored diamonds. The auction lasted about 20 minutes, indicating strong demand. This sale outstripped the previous price of $8.5 million the diamond fetched in 2014. In contrast, Sotheby's auctioned a 6-carat fancy vivid blue diamond that failed to sell, highlighting the fluctuating nature of the market for rare gems. Collectors are increasingly seeking unique colored diamonds, which are a small fraction of all diamonds mined globally. Notably, in 2023, a blue diamond weighing 17.61 carats sold for $43.8 million at Christie's, while the most expensive diamond ever auctioned, the Pink Star, was sold for $71.2 million in 2017.