Taiwan's jewelry lovers now have the one and only chance to witness the largest round pink diamond ever to appear in auction history in Taipei this weekend, as the rare stone, "Martian Pink," will be exhibited in Taiwan before being auctioned in Hong Kong later on May 29th. 　　According to Christie's jewelery specialist, the 12.04-carat fancy intense pink diamond is expected to fetch over 8 million US dollars. "Martian Pink" was first purchased by Harry Winston in 1976 and was given the name to celebrate the first satellite mission to Mars by the U.S. in the same year. 　　May Lim: "One of our highlights is the 12.04, brilliant cut, fancy intense pink diamond. It's the largest diamond, round pink diamond, ever to appear in auction history. So why is this pink diamond so out of the ordinary? Because in 1976 the collector that actually bought the diamond, bought it from Harry Winston and that was the same year the United States launched the Martian Exhibition and to commemorate this event, Harry Winston decided to name this diamond the Martian Pink," 　　In addition to the huge size, it is also the color purity that makes "Martian Pink" diamond so valuable. While most natural pink diamonds have a tinge of purple, grey or orange to them, this stone shows no trace of a secondary color. 　　"Coloured diamonds are very rare, they don't usually appear, and in order for a pink diamond to be this intense in colour is extremely out of the ordinary. And it for it to be this saturated, for it to become a round brilliant diamond is exceptional, you rarely find it in the market at all." 　　The other significant sized round pink diamonds in the world is believed to be the 23.60-carat "Williamson Pink" diamond, which is presented to Queen Elizabeth II in 1947 as a wedding gift. 　　Christie's auction house expects to raise over 76 million U.S. dollars from 300 lots at the jewelery sale which begins on May 29.