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35 Most Valuable Gemstones, From Least to Most Expensive
Red diamonds are fancy-color diamonds that are so rare that only a handful are found each year and only in a few mines worldwide. They are the most expensive type of diamond, costing more than ...
Wall Street Journal2y
World's Most Expensive Diamond Makes $57.5 Million
The Oppenheimer Blue sold on Wednesday for more than $57.5 million including fees at a Christie's auction in Geneva, making it the most expensive diamond ever sold.