Smoky black Tourmaline stone 1.high quality 2. excellent machine cut crystal 3. satisfying service Tourmaline is a crystal boron silicate mineral compounded with ... aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the gem comes in a wide ... ,DHL,UPS,Fedex or according to your requirement Smoky black Tourmaline stone