Damale is a well-known mine, distinctive because it is one of the few turquoises that can be truly yellow-green, either from iron or environmental conditions, but without zinc. Turquoise from the Damale mine is wonderfully distinctive; very hard, and visually appealing. It forms in veins and occasionally as nuggets in carbonaceous chert and also diatomaceous earth. Much of the production from this mine is a high-grade variscite, a “first cousin” to the turquoise.
The mine is extraordinarily versatile, its colors ranging from pure lime-green through bright chartreuse; it can also be yellow with black webbing, or white, orange, and brown, or even a caramel color with bright green polka dots. The mine also produces small black nuggets with bright yellow-green bumps poking out of the black matrix. Its availability is extremely limited because the mine is small and difficult to work. Due both to its limited quantity as well as its rare color and quality, turquoise from the Damale is an exceedingly collectible turquoise.