We could define glass as a noble material. Made with naturally-derived raw materials, has been used for as many as 5,000 years and today it can be separated and recycled – with economic and environmental advantages – potentially ad infinitum. Glass does not change its physical and chemical characteristics in its recycling and processing of new products phases: this makes 100% recycling possible, without any loss of mass and of its intrinsic properties and with no need of more virgin raw materials. Basically, products made through glass cullet will have the same characteristics as the recycled ones and at the end of their life will be sent to the glass producing factories, thus achieving a virtuous circle that could potentially last forever.   What Is Glass Made of...