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 and the gemstone comes in a wide variety of colors..
NOTE: The item photographed is similar to the one you will receive. These specimens colored black, and are approximately 1" in length, and weigh between 0.6 and 1.0 ounces each. Country of Origin: Pakistan.