Forbes reported that from September 13, 2014 to January 6, 2015, the Blue Moon diamond will be on display at the Natural History Museum of Los Angeles County. It was recovered at the beginning of the year from Petra Diamonds Ltd.’s (LSE:PDL) Cullinan mine in South Africa.
As quoted in the market news:
What separates this diamond from so many of its peers is its color saturation and shade, its clarity and its size. The 12-carat cushion-cut diamond has been given a color grading of ‘fancy vivid’ with an ‘internally flawless’ clarity grading from the Gemological Institute of America.
In addition, its color was further tested under ultraviolet light by the Smithsonian Institution under the supervision of Jeffrey Post, curator of the National Gem and Mineral Collection. The trace element Boron within the carbon structure of the stone is responsible for the color of a blue diamond. Boron also produces a unique phosphorescent red glow under ultraviolet light.