单词 | chrysoberyl |
释义 | Word Frequency chrysoberyl(ˈkrɪsəˌbɛrɪl) noun a rare very hard greenish-yellow mineral consisting of beryllium aluminate in orthorhombic crystalline form and occurring in coarse granite: used as a gemstone in the form of cat's eye and alexandrite. Formula: BeAl2O4 |
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