BEIJING, CHINA - JANUARY 13: A general view of a red lantern lamp is seen in front of the Apple's Beijing flagship store on January 13, 2012 in Beijing, China. Apple with China's leading telecommunications carrier, China Unicom, began to sell Apple's iPhone 4S at the Chinese mainland today. (Photo by Feng Li/Getty Images)
Apple is spending $700 million on creating phones with a harder synthetic material that can protect more than glass -- but expect synthetic sapphire to only appear on Apple's higher-end screens.
The synthetic sapphire is being produced at a Mesa, Ariz facility with GT Advanced Technologies, and will protect iPhones and wearables from cracks and scratches, according to the Wall Street Journal. The sapphire display can also resist high temperatures and corrosion.