Amazonite has a triclinic crystal system and is in the mineral class of lattice silicate in the feldspar family. It’s green coloring comes from the copper in its make-up. It can be formed from several processes. Hydrothermally, in sediments or metamorphically during the formation of crystalline slate.
This stone can also be confused with Aventurine at times in its deeper shades because of the sparkles of microline in it. Generally though, Aventurine is much greener compared to this ones blue to aqua hues of green.