The Important thing about authentic meteorites are fusion crusts. Most of the known meteorites do have a fusion crust from entering in our athmosphere at speeds of many miles per second. That causes the exterior of the meteorites to melt and that is what is called fusion crust. Without one, its highly unlikely you have a meteorite. If you wanna learn more about meteorites, have a look around and search for the word "fusion crust". That´ll help you to learn what you need to look out for. There are many interesting databases with pics of authentic meteorites. I spent days looking at em while realizing all my so called meteorites were junk from ancient metalproduction and stuff. bye GA