Aquamarine – Be3Al2Si6O18 is a blue-colored beryl variety. It features a breathtaking blue color that resembles the sea level. For this beautiful color owes small pieces of iron. In nature, aquamarine is found to be quite abundant in quantity, and its physical properties boast a high degree of hardness and gorgeous shine. The raw aquarium is easy to work with, so it is popular with a variety of imaginative shapes.