 | A Fancy Intense Blue diamond which has been held in a private collection for nearly 30 years sold for $3.6 million, smashing its $2 million high estimate, at Bonhams Fine Jewellery sale in London. Final price was $853,203 price per carat.
The second highest value lot sold was a 9.61-carat Kashmir sapphire single-stone ring. The octagonal step-cut sapphire went under the hammer for $1.1 million, equating to $112,600 price per carat. |  |