Ocean Dream: 5.5-Carat Blue-Green Diamond Fetches $17.3 Million in Geneva
A 5.5-carat triangular-cut blue-green diamond named 'Ocean Dream' sold for a record $17.3 million at Christie's Geneva jewelry sale, bought by a private client after about 20 minutes on the block; the stone, found in Central Africa in the 1990s, set a new high for its kind and surpassed its roughly $9–$13 million presale estimate.