In Pictures: Here’s how Apple is spending $1 billion on sapphire

From rare gemstone to mass market material for future iPhones, iPads and more?

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The end result is a hockey-puck shaped mass of colorless sapphire. In nature, iron and titanium impurities give sapphires a distinctive blue color, while chromium creates another corundum gem: ruby. The AFS can produce various sizes, the largest is about 15 inches high and 15 inches in diameter, weighing about 253 pounds. But that's only the beginning.

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In Pictures: Here’s how Apple is spending $1 billion on sapphire

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