Multimedia Gallery
October 17, 2011
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Imperfections (known as color centers) in the diamond can give the crystals a characteristic color.
Imperfections (known as color centers) in the diamond can give the crystals a characteristic color. Nitrogen in these tiny diamonds (top) turns them yellow. The chip at the bottom consists of diamond layered on silver.
Credit: Photo by Eliza Grinnell / Harvard SEAS
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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