The Graff ruby realised $8.6m in a sale at Sotheby's Geneva on November 12, an increase of 11.5% pa on the $3.6m it sold for in 2006.
 The Graff ruby made $8.6m at Sotheby's Geneva |
Described as "pigeon blood red", the stone is named for its previous owner - jewellery magnate Laurence Graff.
Christie's also held a major jewellery sale on November 12, with the Blue Belle of Asia setting a $17.2m record for a sapphire.
Please sign up to our free newsletter to receive exciting news about watches and jewellery auctions.
