Mohs scale of mineral hardness

I can’t remember if we’re still mad at Consumer Reports for Antennagate but they seem to be doing a thorough job at testing the Apple Watch as evidenced in the video below. Notable from their Day 1 tests is that the Apple Watch Sport screen does scratch but only after going pretty far down the Moh’s hardness scale (7-rated) into the unlikely to ever happen category.

The Sapphire Apple Watch however wouldn’t scratch under any circumstances, though it doesn’t appear that Consumer Reports had a diamond pick to test it against. Regardless, for intents and purposes, you likely will never see a scratch on the face of the Apple Watch (the back is a different matter)…
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