Artificial intelligent assistant

alexandrite

alexandrite Min.
  (ælɪgˈzɑːndraɪt, -æ-)
  [Named from Alexander I, Tsar of Russia; see -ite.]
  A variety of chrysoberyl found in the Ural Mountains.

1837–80 Dana Min. 155 Alexandrite of emerald-green color.

Oxford English Dictionary

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