The Ocean Dream Diamond: The Ocean Dream may be small - a mere 5.51 carats - but it’s the only diamond in the world of its kind. No other diamond is known to naturally possess a blue-green hue like this one. The color is thought to have come from being exposed to natural radiation in Central Africa for thousands of years. It’s currently owned by the Cora Diamond Corporation, but you might have seen it at the Smithsonian as part of “The Splendor of Diamonds” exhibit a ...
World's Most Expensive Colored Diamonds
Ocean Dream Diamond (value unknown) Simply put, this diamond is one of a kind. Discovered in central Africa, the Ocean Dream Diamond possesses the Fancy Vivid blue-green color naturally. After studying the 5.50-carat diamond, the Gemological Institute of America concluded that the Ocean Dream's unique hue results from its exposure to natural radiation over millions of years.