Black tourmaline is also known as schorl. This stone is as black as jet and as shiny as mica. The black tourmaline specimen is approximately 1.9" x 2". All stones are unique so color and shape may vary slightly from picture. We will choose the best tourmaline for you. TOURMALINE: The rainbow of gemstones, tourmalines come in an amazing variety of colors and are extremely positive to work with. The stone is electrostatically charged when rubbed. Black reflects negativity and evil back to its source.