One of the most impressive diamonds to come to auction is up for sale at Sotheby's in Geneva in November 2011: the Sun-drop 110 carat yellow diamond.
Maria Doulton speaks with antique and contemporary jewellery expert Joanna Hardy about the highlight of the Sotheby's Magnificent Jewels sale on 15 November 2011; the Piaget Sun-drop 110 carat yellow diamond ring. But there is more to marvel at as Joanna Hardy explains.
Read all about the auction and the result here.
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