stockae92 wrote:I bought mine used, so I don't how the PO managed to scratch the sapphire crystal. But a diamond ring or cement wall will scratch sapphire crystal.
A diamond ring yes, cement wall not. Been there, done that several times mucking out stables.
Diamond is about the only thing I can imagine scratching it. I have had a cobalt drill bit fall on it

and it left nooooo visible trace.
Btw, the worst thing I managed to do to it was accidenatlly hold it against the electric fence maxed out for horses on a wet soil and only 10 metres from the machine
I félt the heat spreading, building up a split second for the cracking jolt knocked me back.
When I got my breath back I as SURE the thing would be fried. The screen had some odd shadows but with the next 10 minutes refresh it was as new.