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October 25 2012
Scientists in Southampton are now able to change the colour of gold.
The technique involves embossing tiny raised or indented patterns on the metal's surface which alters the way it absorbs or reflects light.
Prof Nikolay Zheludev, who leads the nanophotonics and metamaterials team at Southampton University, said it means gold can be made red or green or a multitude of other hues.
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