The World´s most expensive diamonds for sale and recently sold Diamonds. https://www.youtube.com/watch?v=hpvJRpxELW0 Apr 4, 2017 A 59.60-carat oval pink diamond was auctioned for 553 million Hong Kong dollars (71.2 million US dollars) at Sotheby's Hong Kong jewels and jadeite spring sale 13.22 carat Blue Diamond called "The Blue" sold for US$23.79 million at Christie auction 14th of...