Natural black lava stone beads form this popular 7 color Chakra bracelet. Accented with silver beads. Approximately 8" in length but adjustable. Black lava stone is said to stimulate the activity of the Root chakra which, itself, has a strong energy. The lava has a calming effect and helps gain clarity and focus. Some believe that, when in contact with the body, the lava stone transmits its useful properties, and is beneficial to the body, strengthens the immune system, and relieves stress.