The best way is to actually take it to a university and have it examined. It is magnetic, does have smooth black melt lines, does not leave red or black marked when rubbed against inside of toilet tank lid, and is not porous, also it is much heavier than any other rock of it's size. I have an appointment to allow ARIZONA STATE UNIVERSITY to study it, if it is real, I will get a certificate of authenticity and most of it back in one piece, or the whole thing if it is just a standard iron meteorite.