Chrysoberyl
[kris-uh-ber-uh l] /ˈkrɪs əˌbɛr əl/
noun
1.
a mineral, beryllium aluminate, BeAl 2 O 4 , occurring in green or yellow crystals, sometimes used as a gem.
/ˈkrɪsəˌbɛrɪl/
noun
1.
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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