New chemical analysis of Aztec turquoise artifacts suggests the stone didn’t come from the Southwestern US as archaeologists have long thought, which raises questions about the scale of long-distance ...

Turquoise, a hydrated copper aluminum phosphate mineral, was highly valued by pre-Hispanic cultures in Meso-America and the American Southwest. It was used in masks, shields and ceremonial objects for ...

Knowing the mystical qualities of turquoise -- Learning the international history of turquoise -- Studying geology & mineralogy of turquoise -- Mining turquoise -- Cutting turquoise : lapidary work -- ...