The craft of creating glass has been with us for millennia. It was first achieved in BC 3500’s!
A simple start, perhaps even by accident, was with calciferous sand melting as a glaze. It wasn’t, however, until about 1600 BC that evidence of glass as the medium (not the decoration) was discovered. Fragments of glass vases were found in Mesopotamia that date back that far… and the rest, they say, is history!
Approximately 1500BC is the first known creation of hollow glass objects, from Egyptian craftsmen.