Obsidian – a type of volcanic glass – can produce cutting ... Modern obsidian scalpels look nothing like the decorative flint-knapped knives of Neolithic man, often resembling their modern ...

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

Miniature weapons, such as this small knife, were buried as offerings at ... They considered green obsidian the most valuable of all obsidian types due to its hue and called it the "obsidian ...

"These types of knives were used for sacrifices ... "The offering is made up of 16 pieces: three of flint and 13 of obsidian, materials that are not available in the Yucatán peninsula, brought ...

“Although the Mexicas preferred green obsidian, the high diversity of obsidian types, mainly in the form of non-ritual artifacts, suggests that obsidian tools from multiple sources reached the ...