Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone. This gemstone can be found in a wide variety of colors. Tourmaline is one of the world's most popular gemstones and it serves as a birthstone for the month of October. Because of its popularity, tourmaline is easy to find in jewelry stores. Well-formed tourmaline crystals are also valued by mineral specimen collectors.
The most spectacular tourmaline crystals are formed by hydrothermal activity. These crystals form when hot waters and vapors carry the elements needed to form tourmaline into pockets, voids, and fractures, which offer an open space for crystal growth. It is one of the most popular crystals to be used for metaphysical purposes.
The black variety of Tourmaline has been found in a large number of locations, including Pakistan, Australia, Brazil, Sri Lanka, Africa and the USA. It is also known as Schorl Tourmaline. Tourmaline Stone has widest color range among all Gemstones, Tourmaline comes in almost every color.