緑りょく柱ちゅう石せき

noun

beryl

A mineral species that includes gem varieties such as emerald and aquamarine. Used in geological and gemological contexts.

• 緑りょく柱ちゅう石せきはベリリウムの重じゅう要ような鉱こう石せきです。

  Beryl is an important ore of beryllium.

• エメラルドは緑りょく柱ちゅう石せきの一いっ種しゅです。

  Emerald is a variety of beryl.