ok i tell you the whole story of it
at work in company while walking a firend passed near me and the glasses of our watches "knocked" eachtoher and he said " oops, i hope i didnt damage your rolex, is it ok?" and i said "no problem man look" then i grabbed a pencil and striked to glass few times really hard then he was like "wtf lol i thought it was going to break,lol cool" then few secs later i sneakly checked if the glass really ok...but it was too late lol...
people say only diamond can scrath sapphire which is WRONG lol