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Sodalite was first discovered in 1891 at a deposit near Bancroft, Ontario by Frank D. Sodalite is composed of Sodium Aluminum Silicate Chloride. Sodalite is the most common mineral of the Sodalite mineral group which is composed of minerals with a similar isometric structure and related chemistry. Sodalite is a dark blue stone with white calcite interspersed.

This sodium aluminum chlorine silicate is almost identical in composition to lapis lazuli, except lapis contains sulfur instead of chlorine.

Its name probably is culled from its sodium content, though some say it comes from the Latin word "solidus" meaning "solid" .

Physical Properties:


Sodalite Birthstone

Azure blue, White, Pink, Gray, Green, Blue
Specific Gravity
2.13 - 2.29
Refractive Index


It helps stimulate courage and endurance and releases subconscious fears and guilt. Soothes and heals the central nervous system. Enhances communication and creative expression. This stone is a record-keeper, useful in memory work and receptive to new ideas and emotions. It combats the negative effects of radioactivity and is useful for balancing the metabolism. Due to sensitivity of the stone, new and previously unused crystals are best for personal use.


In Canada, Sodalite is often referred to as Princess Blue because it was found there during a Royal visit.


Namibia, Brazil, Canada, USA, Italy, Brazil, and USA.