- a mineral, beryllium aluminate, BeAl2O4, occurring in green or yellow crystals, sometimes used as a gem.
Origin of chrysoberyl
Also called cymophane.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for chrysoberyl
Some of these approach the chrysoberyl and topaz in hardness and hue.
Chrysoberyl, kris′o-ber-il, n. a mineral of various shades of greenish-yellow or gold colour.
Another important variety is that of the chrysoberyl called "cymophane."
Chrysoberyl (alexandrite and also the greenish-yellow chrysoberyl).
Passing on to the next mineral in the scale of hardness we come to chrysoberyl, which is rated as 81⁄2 on Mohs's scale.
- 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: BeAl 2 O 4