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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.
Also called cymophane.
Origin of chrysoberyl
1350-1400
1350-1400; Middle English < Latin chrȳsoberyllus < Greek chrȳsobḗryllos, equivalent to chrȳso- chryso- + bḗryllos beryl
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for chrysoberyl
  • The only wellknown natural gemstones harder than chrysoberyl are corundum and diamond.
British Dictionary definitions for chrysoberyl

chrysoberyl

/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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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