When we search for screen protectors online, the word “9H” pops up frequently. You might have been wondering, as a measure of hardness, how hard is “9H”?
In fact, “9H” is a misleading advertisement because it’s defined according to the pencil hardness scale. Obviously, graphite will not be harder than glass.
The Mohs scale is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. The Mohs scale defines talc as 1, diamond as 10. Sapphire sits on level 9 on this scale, which means it can resist scratches from sand, rock and concrete. Our sapphire screen protector will stay pristine under extreme environment.