Archaeologists working in Mexico City have unearthed hundreds of obsidian artifacts dating back to pre-Columbian Mesoamerica ...

The Aztecs didn't discover obsidian. It was already the most common raw material in Mesoamerica when they arrived in the ...

Obsidian could be shaped into sharp tools like blades. Miniature weapons, such as this small knife, were buried as offerings at Tenochtitlán. The artifacts examined in the study were uncovered ...