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Nature 448, 396-397 (26 July 2007) | doi:10.1038/448396c; Published online 25 July 2007

Diamonds 'melted' inside an onion

Philip Ball

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Crystals flicker under extreme conditions.

Diamonds may not be for ever: researchers think they have seen, for the first time, the molten form of what is arguably the world's hardest material.Jianyu Huang of Sandia National Laboratories in New Mexico heated diamond, at high pressure, to more than 2,000 °C inside microscopic hollow shells of carbon and watched the diamond soften (J. Y. Huang Nano Lett. doi:10.1021/nl0709975; 2007

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