The historic Farnese Blue diamond, which has been passed down through European royal families for the last three centuries, was put up for auction on Tuesday in Geneva and fetched $6.7m (£5m).
Auction house Sotheby's, who auctioned off the item at its Geneva branch, predicted that the diamond would go for between £2.7m and...
Historic Farnese Blue diamond sold at Geneva auction for £5m
May 16, 2018
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