The origins of glass
Glass has probably always existed; it has been formed by the geological phenomena that suddenly heightens the temperature and melts sand, quartz and siliceous rocks. It’s believed that mankind used this kind of natural product to build sharp tools since the Stone Age. According to tradition it was the Phoenicians who discovered glass, using it in a fortuitous way, around 5.000 B.C.; they would light fires on the banks of the Belo river in Syria causing the fusion of blocks of nitrate, forming granules of hard and semitransparent material. In the beginning the cradle of development of this material was in the Far East. Syrians and Egyptians developed the first glass objects which merchants and navigators spread quickly in the Mediterranean area. The first production centre and where new techniques were developed was Alexandria, they manufactured articles that got exported to Greece and Rome. During the Roman Empire, around 100 B.C., the production and the utilization of glass had a strong development.