SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Emerald gemstone. Emeralds are a green variety of the mineral beryl (beryllium aluminium silicate), which get their colour from traces of chromium and iron. Unlike other beryls, emeralds often contain inclusions and other flaws. Uniquely among gems, these flaws are considered part of the emerald's character and add to its value. This emerald was found in 1990 in the Malyshevsky emerald deposit, the Urals, Russia.
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