Sapphire, a crystalline form of aluminum oxide, probably won’t
ever be as cheap as Gorilla Glass, the durable material from
Corning that’s used to make screens on iPhones and other
smartphones. A Gorilla Glass display costs less than $3, while a
sapphire display would cost about $30. But that could fall below
$20 in a couple of years thanks to increased competition and
improving technology, says Eric Virey, an analyst for the market
research firm Yole Développement. And since sapphire performs
better than glass, that price could make it cheap enough to
compete, he says.
Sapphire is harder than any other natural material except diamond;
by some measures, it’s three times stronger than Gorilla Glass,
and it is also about three times more scratch resistant
I’d pay $30 for that in a heartbeat.