How nice it is, an apparently eye clean, lighter blue, completely open, droplet of color. It has fine crystal and is ready to flash and dance at a moments notice. It certainly could be an aquamarine, but tourmaline has a higher index of refraction and that makes them noticeable brighter than beryls (aquamarine is a color variety of beryl). If of course they get a great polish like this gemstone has. It weighs .99 carats.