This giant blue diamond could sell for up to $55 million

An extremely rare blue diamond is headed to auction at Sotheby’s Geneva location this weekend. The 12-carat, fancy vivid blue, cushion-cut diamond is estimated to sell for between $US35 million and $US55 million.

Called “Blue Moon,” the diamond was unearthed at Cullinan Mine in South Africa in 2014.

Editing by Carl Mueller.

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