Sapphire Phone Displays Are Tough, But The Realities Are Even Tougher

[Spartan]

Sapphire is the birthstone of September, the traditional gift on your 45th wedding anniversary and a material associated with both luxury and ruggedness. It can be found in opulent products like jewelry, camera lenses and fancy watches. Given that, it's also one of the toughest materials in the world, which makes it ideal for military-grade items like aviation displays and even missiles. So when rumors emerged that a sapphire display may be featured on the next iPhone, a chorus of excitement followed. However, many phone manufacturers don't share the same sense of optimism that Apple might hold toward this different kind of next-gen display.

 

http://youtu.be/5R0_FJ4r73s

 

 

There's one major reason why manufacturers are looking into using sapphire displays: The material is strong. Very strong. Sapphire is about four times as tough as glass. Gorilla Glass, regularly found protecting current smartphone screens, fares pretty well against hard objects too, but in order to scratch sapphire, you'd need to find something higher than nine on the Mohs scale -- a system of measurement used to rate mineral hardness from one to 10, with 10 being the highest. (For comparison, Gorilla Glass rates a seven; sandpaper is a nine; and diamond is a 10)