Yesterday, the State of Arizona and GT Advanced announced that Apple is building a new 700-employee factory in Arizona to make sapphire glass. Apple will contract with GT Advanced, with that company owning and operating furnaces and related equipment at the facility. Back in April, Pocketnow went to GT Advanced's factory in Massachusetts to find out how sapphire displays are made. It's likely that the facility in Arizona will use a similar process, though we do not yet know what Apple will use the sapphire for. A safe bet would be the company's rumored smart watch product -- many luxury watches use sapphire glass because of its durability.
