Lapis Lazuli

Lapis lazuli is the popular name of a rock containing the blue mineral lazurite, related to the minerals hauyne and sodalite. The rock typically also contains white (calcite) and flecks of "gold" (pyrite). The chemical composition of lazurite is Na₇Ca(Al₆Si₆O₂₄)(SO₄)(S₃) · H₂O

Lapis lazuli is one of the traditional birthstones for the month of December. 

Discover more about lapis HERE (mineralogy & geology; spiritual, metaphysical & healing properties)