Christie's sale of magnificent jewels in Geneva achieved a total of more than $78M, the highest result for any jewellery auction ever held by the auction house in Switzerland. The top lot was a 56 ct heart-shaped diamond, which sold for more than $10M...

A superb 19.94 carats Kashmir cushion-cut sapphire. Photo: Christie's Images Ltd., 2010 The unmounted cushion-cut sapphire weighing 19.94 carats Accompanied by report no. 1008001 dated 3 August 2010 from the Gübelin GemLab stating that the sapphire is...