a somewhat uncommon blue, violet-blue, or greenish-blue translucent mineral, Na4-5Al3Si3O12S, the main component of lapis lazuli.
A mineral of metamorphosed limestones. Lazurite forms the gemstone lapis lazuli, and smashed lazurite offered the ultramarine shade in musicians and artists' paint of this old masters. sodalite and lazurite form the sodalite group of silicate nutrients. Chemical structure: Sodium aluminum silicate with sulphur, .
The sodium-aluminium silicate which forms the fundamental area of the decorative stone lapis lazuli.