Moon glass has the tranparency and purity of the moon. Each Art Glass Wishing Pyramid has a mirrorred base and a door that opens from the top with a little crystal ball. Use your pyramid to energise crystals, pendulums, your essential oils, and most of all your thoughts. Write a wish on a piece of paper and insert it in the pyramid. These thought amplifiers are considered the most positive talisman on earth. The angles are the same as big Egyptian pyramids.