So there was a off topic that started in a Seiko thread but it was getting out of hand from the original topic so I wanted to start it here so people can voice their opinion. One individual in the thread said by the laws of physics only a diamond could scratch a sapphire crystal and that if you bump your watch against anything short of diamond (like a brick wall), not only would you not see scratches but if you did then it was not sapphire and the watch company lied to you. So obviously that sparked great discussion about what sapphire can take. What do you all think and has anybody had their sapphire scratched before? And you intentionally using a diamond sword does not count.