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A comment on Apple Bought $578M Worth of Sapphire.

Re:Apple Bought $578M Worth of Sapphire by specialist on Saturday November 09, 2013 @03:08AM (#6701046)
Is it practical to make eyewear (glasses) lenses from sapphire?

I'm brutal on my glasses. I'd happily pay for tougher lenses. Though I did see mention that the failure mode for sapphire is lots of shards flying. So maybe I'll wait.

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Re:Apple Bought $578M Worth of Sapphire by masklinn on Saturday November 09, 2013 @04:45AM (#6701211)
> Is it practical to make eyewear (glasses) lenses from sapphire?

They would be way heavier than good polyc lenses, yet more expensive than basic (heavy) glass. I doubt there's much of a market, but might have more luck/info asking manufacturers directly (essilor, leitz, nikon, zeiss, ...)

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