Emerald is the green variety and Aquamarine is the blue variety of beryl.
Other colors of beryl are not as well known.

The greenish-yellow variety is called Heliodor.
The pink variety is called Morganite.
The colorless variety is called Goshenite.
The name beryl is used for the red and golden varieties, which are simply called red beryl and golden beryl, respectively.
Beryl is colorless in pure form, it is the many different impurities that give beryl its varied coloration. Without these splendid color varieties, beryl would be a rather ordinary gemstone with only average fire and brilliance.
Beryls are popular gemstones, and not only because of their gorgeous colors. They also have a very high brilliance and their excellent hardness of 7.5 making them very suited for everyday wear when sports are not involved.