This is a clear turquoise from Compitas mine in Sonora,
Mexico which resembles the deep blues of Sleeping Beauty. It is medium light-blue with no matrix and a
little pyrite. The turquoise is very
unique in that it is found as free-form nuggets in clay material, rather than
in rock veins.
The mine has produced this turquoise since the mid-1980s. Archaeology also shows that Southwestern peoples mined these deposits extensively. There are also historical traces of Native American turquoise mining.