Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Hundreds of ...

as well as being used in the production of prized ornaments like mirrors and jewelry. The findings revealed that the Mexica favored green obsidian for ceremonial artifacts from the Sierra de Pachuca ...

Hundreds of obsidian artifacts have revealed where the Aztecs acquired the volcanic glass they used for tools, ornamental pieces or religious objects centuries ago — and their vast trade ...