Tourmaline exists in more colour varieties than any other gemstone. It is believed to transform negativity energy in to positive energy and helps strengthen the mind, body and spirit. Please note that due to the natural quality of the gemstones, the colour is unique to each piece and may vary from the image on our site. Product Details The chain measures 20.8cm with adjustable slider; the gemstone bead measures 0.2 x 0.2cm.