Aquamarine is the the birthstone for the month of March. Aquamarine is the blue variety of the mineral known as beryl. It occurs in a range of colors from slightly greenish blue to a nearly pure blue hue.

Aquamarine also occurs in a range of color saturations, from a very light, almost imperceptible blue to a rich deep blue. The richly colored aquamarines with the purest blue color are most popular. Many people enjoy the light-colored stones which are much more affordable.