Called The Pink Star, this 59.60ct oval-cut pink diamond is the largest internally flawless Fancy Vivid pink diamond in the world. It was sold by Sotheby's for $83.19 million in November 2013 but the auction house was forced to reacquire it because the bu

Called The Pink Star, this 59.60ct oval-cut pink diamond is the largest internally flawless Fancy Vivid pink diamond in the world. It was sold by Sotheby's for $83.19 million in November 2013 but the auction house was forced to reacquire it because the buyer couldn't afford it.