Black tourmaline beads are also known as schorl beads. This semiprecious gemstone consists of a complex silicate of boron and aluminum. Some black tourmaline contains gold-colored inclusions caused by a variance in its makeup.
At first glance, this stone looks very much like black onyx. While black onyx is solidly opaque, close examination of black tourmaline shows a slight translucency and occasional inclusions.
It is said that black tourmaline dispels negative energy, bringing good luck to the bearer. If you rub the stone, it will become magnetically charged and this is believed to intensify your good luck. Black tourmaline can be found all around the world.