Tourmaline is a complex aluminum borosilicate with hardness of 7 to 7.5.with prismatic crystals and striations running parallel to the min axis. It is a popularity stone because it is a bright and beautiful and can be found in many colors and a high-quality material.

Tourmaline displays a greater range of colors than almost any other known gemstone. The most common color available is black, but every color of the rainbow can be found. Tourmaline is renowned as the gem of sensitive poets and creative artists and believed to inspire creativity.

The rarest member of the tourmaline family is the pink tourmaline.