Apple has reportedly spent $578 million to speed up the development of sapphire glass displays destined for the iPhone 6. According to International Business Times, Apple is keen to use sapphire glass for the display of its next generation iPhone due to its exceptional durability. Therefore, the company is said to have paid more than half a billion dollars to GT Advanced Technologies for faster development of the furnaces required to manufacture high volumes of the material at low costs. Above: An example of the type of GT Advanded Technologies furnace required to make sapphire glass Sapphire glass, which is currently used for the
