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35 Most Valuable Gemstones, From Least to Most Expensive
When you think of expensive gemstones, what comes to mind? Most people think of the Big Four: diamonds, emeralds, rubies and sapphires. However, it might surprise you to know that there are ...
Business Insider3y
Why pearls, black opal, and chocolate diamonds are so expensive
Meline: A pearl is one of the most ... diamonds need to fall in a specific shade, between C4 and C6, on the industry's color scale, which is more of a milk than a dark chocolate. More from So ...
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.