An 8mm lava stone that you can easily add onto your necklace. Simply attach to the back of your necklace using the lobster clasp. Diffuse your favorite essential oils on the nape of your neck for added benefits. This listing is for one lava rock nape bead add-on. Choose from: ▪Silver ▪Copper ▪Antiqued Brass Ships free with another item! If you have questions, please contact me before ordering. I am very prompt responding to messages.