This tourmaline, variety rubellite, crystal is from the Morro Redondo Mine, Coronel Murta, Minas Gerais, Brazil. It has 20 known different mineral species including elbaite. It s a type of tourmaline that contains the elements Na, Li, Al, Si, B, and H. Pure crystals are colorless but it can be found in a variety of colors depending on the trace elements incorporated in the crystal lattice. This is a double terminated red crystal with etched, skeletal, or re-crystallized surfaces. The crystal measures 21 x 12 x 10 mm. It weighs 4.5 grams.