Diffuse your favorite essential oil in style with this beautiful handmade lava stone necklace. With the purchase of this necklace, you are supporting a social enterprise production facility in the USA that offers employment and hope to women transitioning out of difficult situations. To diffuse with your favorite essential oils, place 1-2 drops of oil directly on the lava stones. Allow surface to dry completely before wearing. Product will ship within 2-4 weeks.