Apple is investing $700 million in a new material called sapphire that will replace glass to provide better breakage protection for the iPhone. The first sapphire screens will be coming off a manufacturing plant in Mesa, Arizona, that Apple runs with GT Advanced Technologies. Apple is using sapphire, a harder and more corrosion resistant material that is costly to produce, for the cover on the fingerprint reader and iphone camera lens. About 11% of iPhone owner screens have cracked or broken screens, according to warranty provider SquareTrade. Compared to Gorilla Glass costing $3 per screen, the sapphire screen would cost $16. Apple paid $113 million for a 1.4 million square foot Mesa facility from a solar panel producer and leased it to GT, a manufacturer of furnaces to produce sapphire. Apple is paying GT $578 million to install furnaces at the factory and run the plant.