Tourmaline – Coronel Murta, Minas Gerais, Brazil
 Former Robert Scheck Collection
 A highly lustrous, black-looking tourmaline that reveals its true beauty in transmitted light. The smooth, elongated prismatic crystal is a wonderful blue at the base, then transitions to an equally pure green (beautifully seen in the video). An undamaged, fan-shaped tourmaline provides a beautiful contrast.
 Tourmaline specimen from Brazil with a variety of shapes and colors.