Lapis Lazuli (Lapis , Lazurite )
Angelina Camba , 2.15.14 , A1
Chemical Formula : (Na,Ca)8Al6Si6O24(S,SO)4)
Lapis Lazuli is rarely without any of the white Calcite present. Embedded Pyrite crystals within most Lapis Lazuli add to the sparkle and naturalness of this gemstone, and when evenly distributed in small amounts makes it more desirable. A deeper blue color makes this gemstone more valuable, as well as a minimal amount of spotting or streaks of white Calcite.