GENEVA (Reuters) - A large blue diamond, one of the world's rarest, could fetch $35-55 million at auction next week, Sotheby's said on Wednesday, as an industry group reported strong prices for colour ...

GENEVA -- Sotheby's says a rare blue diamond has sold for a record $48.5 million at a Geneva auction, including fees. The 12.03-carat "Blue Moon" diamond, set in a ring, is said to be among the ...

At the New York headquarters of Cora International LLC, Suzette Gomes is spellbound by a sight of rare beauty. “You can’t describe that blue,” said Gomes, chief executive officer of the ...

An extremely large blue diamond netted 48.6 million Swiss francs ($48.5 million), setting a new record price for any jewel at auction, Sotheby’s said. The "Blue Moon" diamond, which weighs 12.03 ...