All chakra bracelts are made with naatural gemstones and high quality strech cord or flex wire. I have several sizes of strech and clasp versions in stock as well as a few black and white versions with lava and white jade along the sides of the chakra representing the balance of yin and yang. The chakra crystals I use are amethyst, lapis lazuli, amazoite or turquoise, green aventurine, yellow jade, carnelian or tiger eye and red jasper or red carnelian.