Aquamarine is valued for its lovely and unique "aqua" blue color. The name derives from the Latin expression for seawater. Aquamarine is a member of the beryl family and is known for its delicate blue or blue green coloring, which accounts for its name. Most aquamarine pieces are of a very pale light blue and have a few inclusions. It is possible to find very large aquamarines. Aquamarine is the birthstone for March. Aquamarine is a popular stone with very good hardness and luster.