An extremely rare, purple-pink diamond mined in Russia, which Sotheby's described as "a true wonder of nature", sold for 24.4 million Swiss francs ($26.6 million) on Wednesday, the auction house said.
An extremely rare, vivid purple-pink diamond mined in Russia is expected to fetch up to $38 million when it goes under the hammer on Nov. 11, the auction house Sotheby's said on Monday.
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