If you love blue Turquoise, then you have probably heard of the Nacozari mine and it's Turquoise often called "Naco" or Nacozari Turquoise. It was a mine in Sonora, Mexico. The mine is located south of the Bisbee, Arizona mine in the same mountain range. The mine is actually a copper producing mine.
Nacozari turquoise can be found in bright sky blue and deep navy blue colors. Nacozari is fast becoming highly collectible and has become nearly impossible to get.