Tiny glass beads from Apollo missions reveal Moon's ancient volcanic eruptions through sparkling mineral coatings.

Obsidian, a volcanic glass highly valued for its sharp edges ... a region famous for its green obsidian. This particular type of obsidian held special significance due to its symbolic connection ...

Analyzing one of the green obsidian objects found at Templo ... and the Proyecto Templo Mayor in Mexico, reveals how obsidian—a volcanic glass used for tools and ceremonial objects and one ...

"Green obsidian from Sierra de Pachuca is unique ... Hundreds of obsidian artifacts have revealed where the Aztecs acquired the volcanic glass they used for tools, ornamental pieces or religious ...