Faceted lapis lazuli, pyrite and rainbow calsilica.
According to Dakota Stones, rainbow calsilica is mined in Chihuahua, Mexico. There is photographic evidence that the mine exists, however what we don’t know is if the stone is naturally occurring or man made. There is a myth that rainbow calsilica may be leftover sedimentary layers from a century old tile cutting factory. Either way, it’s colors are gorgeous and earthy!