( 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.
( 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.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012