What time is it? Watches and horology

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TurtleRecall in reply to @Sumo

I thought sapphire was more likely to smash than scratch?

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Sumo in reply to @TurtleRecall

That may be true, but I've never met or heard of anyone smashing their sapphire crystal. And if I couldn't even scratch it in 10 years of everything from being rubbed against skateboard grip tape, to being rammed in to concrete at high velocity, I'm happy to think it's basically invincible.

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