article_snippet.sent: The glass is made from synthetic sapphire, which is created by applying heat and pressure to aluminium oxide powder, before the crystals are processed to remove impurities.
article_snippet.sent: The tiny round disks created are ground into shape, and polished, to become glass.
article_snippet.sent: Sapphire glass is said to be twice as tough as normal glass and almost as hard as a diamond.
article_snippet.sent: ‘Sapphire glass is pretty strong and virtually impossible to scratch’.