This mine is the most important turquoise mine in the world and some natural-historical samples of Neyshabor turquoise are kept in the museum of London and the Geological Museum of Iran.
Turquoise is a blue opaque gemstone extracted from the mines and appreciated as a beautiful decorative stone in many historical civilizations of the world.
With a combination of iron, copper sulfate, aluminum and water molecules, the stone has a unique blue color, some of which have green, golden, dark and brown streaks.
AA/MG