chryso·ber·yl /ˈkrɪsəˌbɛrəl/
  金綠玉
  Chrys·o·ber·yl n.  Min. A mineral, found in crystals, of a yellow to green or brown color, and consisting of aluminia and glucina. It is very hard, and is often used as a gem.
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  chrysoberyl
       n : a rare hard yellow green mineral consisting of beryllium
           aluminate in crystal form; used as a gemstone