Also known as Iceland spar. It is called the seers stone and learning stone  it is helpful for those working on the law of attraction and manifestation as it aligns you on your spiritual path. It joins your emotions with intellect for a stronger emotional intelligence. Clear negative energy from the body, Spiritual progress, inner vision, insight, clarity, consciousness, clear stagnant energy and blockages, development, forgiveness, moving forward, increasing vibrational frequency, energy purifier,  and manifesting. One intuitively chosen stone