Other guy likely to get the ignore too, but a quick google of "sapphire shatter" makes it appear you are the wrong one. A fact is not something that can be proven, because every "proof" is based on a theory. The temperature outside is not a fact because the theory of thermal expansion and thermodynamics are used in making that determination. "scientific fact" is a term, but it's just a theory that is so well tested, nobody bothers anymore, but it is never a fact, any one experiment can invalidate the theory at any time. Heck, our existence in general is still a theory. There are no facts in science, testable theories are as good as it gets.
Looking through google you can see that many use the wrong phrase any way, so that is irrelevant, many say their iPhones are cracked when they are shattered ect. Any way if I say my shirt is green is that not a fact? I understand most of science is a theory but that doesn't mean facts don't exist.