Tourmalines are complex borosilicates of aluminium and many other elements, mainly sodium, iron, magnesium, and lithium. These elements represent themselves in various patterns in tourmaline crystal structures. It got its name from the Sinhalese turamali – multicoloured. In 1703, Dutch brought tourmalines from Sri Lanka to Europe. It belongs to the trigonal system. Elbaite is the most colourful mineral of the tourmaline group. Elbaite is the name of the Italian island Elba, an important deposit uncovered in 1913.