A crystal with an extra diamond or rectangular face between the body and tip of a point is called window. It is believed this crystal will open a ‘window to your soul.’ and help you get intuitive answers to questions, bypassing ego & intellect. If the window can only be seen through the right side of the crystal (from the largest face), this increases the intuitive part of the brain and links one to the future. If it is from the left, this increases the intellectual part of the brain and links to the past.