great spiritual and purifying power means “ that which cannot be drunk”; in ancient times it was thought that it made man awake by conferring common sense and balance.It amplifies vision, increasing the ability to visualize and spiritual awareness. Meditative stone, reveals his inner wisdom; thus makes us open to intuition and connection to the soul. It facilitates the memory of dreams, placed under the pillow (sleep becomes deep and peaceful.) Useful for skin care, relieves pain and regulates metabolism.