Sotheby’s is set to auction off a 102-carat diamond that could become the most expensive jewel ever sold to an online bidder. The stone, a 102.39-carat D Color Flawless Oval Diamond, could fetch $10 million to $30 million. Only seven flawless white diamonds of more than 100 carats have ever been sold at auction. It is the second-largest oval diamond of its kind ever sold at auction.
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