Tourmaline – Pederneira Mine, São José da Safira, Doce Valley, Minas Gerais, Brazil
 Tourmaline with an etched cavity along its longitudinal axis, filled with small, wafer-thin tourmalines. A special growth form that is rarely found in such a pronounced form.
 The tourmaline has an intense bottle green color and is covered with smaller crystals on two prism surfaces.
 A very interesting and unusual collector's item with intense shine.