In Pictures: Here’s how Apple is spending $1 billi...
Long-prized as a gemstone, sapphire has been increasingly important – in synthetic form - as an industrial material. But its relatively high cost has stymied wider user of its optical clarity, incredible hardness, and dielectric properties. Apple has made sapphire a strategic investment: if successful, the company will drive sapphire into new, mass market uses, starting with its own mobile products.
Shown: Corundum's crystal structure.
In Pictures: Here’s how Apple is spending $1 billion on sapphire