The “Blue Moon of Josephine” is a 12.03 carat blue diamond that sold for $48.4 million in 2015.It still holds the auction record for the price-per-carat of any diamond or gemstone, the press ...

The Blue Moon was produced from a 29.62-carat rough diamond unearthed at the Cullinan mine in South Africa in January. The mine is known for producing the most blue diamonds in the world but these ...

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 ...