Sotheby's flawless Blue Moon diamond, a 12.03ct will be the largest ever blue diamond ever to appear at auction. It was cut from a 29.62 rough blue, found by Petra Diamonds at the South African Cullinan mine in Jan 2014. It was purchased by Cora International and took 6 months to cut and polish. Estimates for auction will be between $35 and $55 million.
Waves of blue and white diamonds criss-cross in this irresistible enhancer ring. With a total diamond weight of 1/2 carat, the ring is styled in 14K white gold. (The diamond solitaire ring is sold separately.) Blue diamonds are treated to permanently create the intense blue color.
Completing our trio of the most expensive diamond rings in the world is the 24.18ct Cullinan Dream - the largest Fancy Intense blue diamond to ever appear at auction. Discover the most expensive rings in the world: http://www.thejewelleryeditor.com/jewellery/know-how/most-expensive-ring-in-the-world/ #jewelry