This elbaite tourmaline crystal is from a mine located on a farm near Coronel Murta, Minas Gerais, Brazil. Elbaite is in the Tourmaline Group of minerals. It is a silicate and it contains the elements Al, B, H, Li, Na, O and Si. It can be found in a variety of colors which are caused by traces of other elements in the crystal lattice. This is a green transparent and glassy crystal. It measures approximately 39 x 5 x 4 mm. It weighs 7.6 carats.