Aids central nervous system, thyroid gland, body reflexes, pituitary gland, and pancreas. Strengthens immunity and improves memory. Eases physical and emotional trauma. Reduces stress and calms the mind. Aligns root and heart chakras for bringing love into action and manifestation. (Red and black variety) Self esteem, confidence. Enhances energy levels in body and mind. Pink variety (without black) helps impart understanding of strength within vulnerability. Great stone for light workers serving in cities. Chakras root, heart.