An extremely rare pink diamond will be auctioned in Geneva on November 11 by Sotheby's, who estimate it is worth between $23 and $38 million.
"The Spirit of the Rose" is named after a famous Russian ballet, the 14.83-carat diamond mined in Russia is the biggest ever to go under the hammer in its colour category -- "fancy vivid purple-pink".
"The occurrence of pink diamonds in nature is extremely rare in any size," Gary Schuler, head of Sotheby's jewellery division.