The name Sodalite reflects this mineral's Sodium content and was named by a Glasgow chemist, Professor Thomas Thomson, who had been hired by the British to identify the stone after they had captured a shipment of it being sent from Greenland to Denmark during the Napoleonic Wars.
Although first Sodalite discovered and recorded in 1806 in Greenland, it took until 1891 for this attractive deep blue stone to become important in the world of ornamental stones. It was then that it was found in vast deposits in Ontario, Canada, by Frank D. Adams, during the Geological Survey of Canada.
Later, as Sodalite was chosen as an interior decoration for the Marlborough House in England by Princess Patricia who had been visiting Ontario at the time and who had fallen in love with the stone, many began to refer to it as "Princess Blue".
Sodalite has also been called "Canadian Blue Stone" or simply "Bluestone".
Sodalite is a beautiful deep royal blue color and usually contains white or grayish colored inclusions of Calcite. Sodalite has been likened to Lapis Lazuli and Lazurite, and in fact is called "the poor man's Lapis", but Sodalite is a slightly different color blue and rarely contains the Pyrite that is common in Lapis, making it easier to tell them apart. Another way to differentiate between the two stones is through the streak test. Where Lapis will streak blue, Sodalite will streak white. Both Sodalite and Lazurite may be common constituents of Lapis, though, and in that instance may be much harder to tell apart. While most often blue, Sodalite can also be found in gray, green, yellow or pink, and all frequently mottled with white Calcite veins.
Sodalite poor cleavage in six directions is apparent by the common occurrence of cracks seen running through the stone.
A rare and highly sought after transparent variety of Sodalite is found in Namibia and in the lava beds of Mt. Vesuvius, Italy.
An unusual variety of Sodalite, called Hackmanite, when first quarried is a violet to red color that will gradually fade in sunlight to a white or green. This is called tenebrescence. Tenebrescence is a reversible photochromism, meaning the mineral exhibits the ability to turn a different color when exposed to the Sun and may be brought back to its original color when kept in the dark - behaving similarly to the self-adjusting sunglass lens that darkens in sunlight. Hackmanite will return to its violet or red color if placed in the dark for a period of time.
The most notable occurrence of Hackmanite is in Greenland which produces a green variety nicknamed "Chameleon Sodalite".
Typically occurring in massive or granular form, Sodalite is found in veins in dry plutonic igneous rocks such as nepheline syenites pegmatites, phonolites, or related rock types. Isometric Sodalite structures rarely produce crystals.
Astrological : Sagittarius
Sodalite stone is most recognized for healing, meditation and wisdom because Sodalite, like Lapis Lazuli, has also been called the "Wisdom Stone" as it is believed to foster wisdom, knowledge and communication thereof.
Sodalite is a good stone for general communication for self and writing. It is used for expressing logic and ideas due to its connection with the Throat Chakra. Sodalite is also used at the Brow Chakradue to the fact that it can access fine levels of intuitive information and promote the understanding of these concepts. Sodalite is also known to enhance community relationships.
Considered a stone that is still evolving, Sodalite can strongly affect changes in your attitude about yourself. It helps you be more objective and less critical about ways of dealing with existence.
Sodalite is a stone associated with studying because it increases intelligence, knowledge and learning and will unite the logical with the spiritual.
Sodalite stone should be worn or carried around as a touch stone for a long period of time in order to reap its full benefits.
Sodalite is an excellent stone for reducing high blood pressure if carried constantly on the person.
Necklaces of Sodalite beads that hang down to the heart area will increase its hypotensive properties.
Sodalite also is associated with the thyroid, it has a calming regularity effect on the thyroid gland, the vegetative nervous system and all glandular functions.
Sodalite balances the metabolism, boosts the immune system and overcomes calcium deficiencies. It combats radiation damage by soaking up electromagnetic smog.
In order to properly benefit from Sodalite's energy it must be worn or carried as a touchstone over a long period of time.
Sodalite should be discharged under running water on a weekly basis, or whenever the stone becomes cloudy or changes color. Then Sodalite should be charged again in a bowl of water together with a rock crystal.
Sodalite treats the throat, vocal cords, larynx and helps with hoarseness and digestive disorders.
Sodalite can also help to prevent insomnia.