- Forum: General Discussion
Just no. It's is not hardened. It is hard.Third in hardness to silicon carbide (on wet and dry paper used in metalwork) and diamond.Is it not "said", it is shown to be the case with a vast amount of evidence. It's not hearsay that it's as hard as it is.It is not resistant to scratches, it is impervious afaik!This sentence is ridiculous.