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It was named in 1885 by Austrian chemist Carl von Welsbach, who fractionated it away from didymium (originally thought to be an element but actually a mixture of rare-earth metals consisting largely of neodymium, praesodymium, and cerium).
Blue recalls the sea and the sky. Green symbolizes the earth. The red star represents unity. White stands for peace. Effective date: 27 June 1977.
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