article_snippet.sent: The sapphire glass screen in the Apple Watch has remained scratch-free after being subjected to being rubbed with sandpaper, keyed and even hit with a hammer.
article_snippet.sent: The test was carried out by Cardiff-based iPhone repairs specialist iPhoneFixed.co.uk, which used a sapphire screen from a 38mm Apple Watch for The test experiment.
article_snippet.sent: Two out of the three models of Apple Watches have sapphire glass screens - the Apple Watch and Apple Watch Edition.
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: To test the durability of the screen, Sapphire glass was rubbed against a stone wall and then with a coin, before being ‘scratched’ by a key.
article_snippet.sent: ‘Sapphire glass is pretty strong and virtually impossible to scratch’.