World's Largest White Diamond, The Rock, Expected To Sell For $30

The largest white diamond ever auctioned will go under the hammer in Geneva next week, part of a sale by Christie's that features two stones weighing more than 200 carats each.
Mined in South Africa, "The Rock" was worn by its former owner as a Cartier necklace.

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World's Largest White Diamond, The Rock, Expected To Sell For $30 Million

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