n. A vitreous mineral, often pale green, a mixed oxide of aluminium and beryllium with the chemical formula BeAl2O4, used as a gemstone.
the GNU version of the Collaborative International Dictionary of English
n. 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.
The Century Dictionary and Cyclopedia
n. A mineral of a yellowish-green to emerald-green color, sometimes red by transmitted light, an aluminate of glucinum.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone
Word Usage
"Your lucky gems are turquoise, cats eye chrysoberyl, tigers eye."