Sodalite is a stone of logic, rationality, and efficiency. It is helpful for work in groups and stimulates thought. It is a stone of truth, and brings this to all communications. It can help end arguments or other disagreements. It is particularly useful for honesty of emotions and love. It increases intelligence, knowledge and learning, and can unite the logical with the spiritual. Beneficial for the glands, diabetes, digestive system, lymphatic cancer, relieving insomnia, and decreasing calcium deficiency. Relief of head colds.