History of glass – Who invented glass?
Obsidian: naturally occurring glass History of glass: Glass beads from Old Kingdom Egypt, about 2700-2500 BC People have been using naturally occurring glass since the Stone Age, when they wanted an [...]
Obsidian: naturally occurring glass History of glass: Glass beads from Old Kingdom Egypt, about 2700-2500 BC People have been using naturally occurring glass since the Stone Age, when they wanted an [...]