Sodalite is a stone of logic, rationality, and efficiency. It is helpful for work in groups and stimulates thought. Sodalite is a stone that is good for healing breaches in communication. It is a stone of truth, and brings this to all communications. It is called a Poet's Stone. 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. Physically it is said in folk lore and crystal healing to be beneficial for the glands, diabetes, digestive system, lymphatic cancer, relieving insomnia, and decreasing calcium deficiency.
Sodalite was discovered in 1811 in the Ilimaussaq intrusive complex in Greenland. Sodalite did not become important as an ornamental stone until 1891 when vast deposits of fine material were discovered in Ontario, Canada.