The biggest pink diamond will be put at the auction next month. According to auction house Christie’s, the Martian Pink, a 12.04-carat pink diamond, is the biggest ever to hit the auction market. The pink diamond is anticipated to bring over $8 million (£4.9 million). The

diamond is amazingly exceptional, and is one of only two pink diamonds in the world which are said to be of ‘significant size’.  The other diamond was presented to Queen Elizabeth II as a wedding gift is the 23.60-carat Williamson Pink diamond.   While most natural ...