Microdiamond crystal

Microdiamond crystal

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This image is part of the feature Microdiamonds

Credit: DAVID SCHARF/SCIENCE PHOTO LIBRARY

Caption: Microdiamond. Coloured scanning electron microgr- aph (SEM) of a pseudo-cubo-octahedral microdiamond crystal. This complex structure is very rare. Microdiamonds are diamonds (pure crystals of carbon) which measure less than half a millimetre in any dimension. Microdiamonds are being studied as an alternative to the more expensive larger diamonds used in industry, for instance as abrasives or heat dissipators. Microdiamonds are thought to form either with larger diamonds in the Earth's mantle (the layer beneath the crust), or in the rising magma (molten rock) that can bring the larger stones to the surface. Magnification: x115 at 6x7cm size. x195 at 4x5 inch size.

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Keywords: carbon, chemical, chemistry, coloured, crystalline, diamond, element, geography, geology, microdiamond, mineralogy, pseudo-cubo-octahedral, russian, scanning electron micrograph, sem, siberian

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