As Apple's sapphire glass supplier, GT Advanced Technologies, files for bankruptcy, The Telegraph takes a look at what the material is and how it is used Sapphire glass is a synthetically produced ...

Sapphire, the hardest natural substance after diamond, might soon be used to make smartphone screens. Sheets of sapphire glass are already used by the military to create transparent armor, but if ...

Importantly, this glass also needs to be scratch-resistant, so that your photos aren't impacted by any blemishes on the lens. Apple says it uses a "sapphire crystal lens cover" for the glass on ...