GENEVA, Switzerland -- Sotheby's says a rare blue diamond has sold for a record 48.6 million Swiss francs ($48.5 million) at a Geneva auction, including fees.
The 12.03-carat 'Blue Moon' Diamond is said to be among the largest known fancy vivid blue diamonds and was the showpiece gem at Wednesday's auction. The price fell within the pre-auction estimate of $35-$55 million. Excluding fees, it sold for 43.2 million Swiss francs.
The Blue Moon - whose name plays off the expression "once in a blue moon" - topped the previous record price of $46.2 million set five years ago by The Graff Pink.
The polished blue gem was cut from a 29.6-carat diamond discovered last year in South Africa's Cullinan mine, which also yielded the Star of Africa blue diamond in the British crown jewels.
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