Why can't we get synthetic sapphire eyeglasses? Abbe number 72.2 (!!!!) and high index of refraction.
But people pay big $ for the awful polycarbonate, etc. lenses all the time, with *awful* chromatic aberration. I'd pay 5x that for sapphire.
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wait, PC is awful? I like how indestructible it is, and it lets me use nearly nonexistently thin frames
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Yes, Abbe value of 30.
End of conversation
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