Black Tourmaline

Tourmaline is crystal. Well-known  for its adoption Jewelry. It 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 stones. Tourmalines are found in all possible colors, tints and combinations of shades one can think of. The varieties of this gemstone span the widest color ranges in the world of minerals. 

Black Tourmaline, also called Schorl is the black, opaque, sodium iron rich variety of Tourmaline, a complex borosilicate with a trigonal crystal system.

Tourmalines usually occur as long, three-sided prisms, which often have well-terminated ends.