Aztec duck-head pendants recovered from Tenochtitlán were made using volcanic glass called obsidian. - Mirsa Islas/Courtesy Proyecto Templo Mayor, INAH Hundreds of obsidian artifacts have revealed ...

SUMTER, S.C. — A shipment of treasured historical artifacts that was on its way to Sumter never quite made it after U.S. Customs and Border Patrol officers intercepted the unusual shipment in Kentucky ...

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(CNN) — 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 ...