Coming across a piece of jewelry said to have been made out of material literally from the cosmos would without a doubt cause suspicion. Thankfully, there are some telltale signs that–although may not be 100% accurate–can still definitely point you in the right direction and let you know if what you have is a genuine meteorite.
Dense: At first glance, you would expect a real piece of meteorite to have a reasonable amount of heft appropriate to their size. However, because of their chemical composition, meteorites are most definitely a lot heavier than they look!
Magnetic: The presence of iron in meteorites tends to make them magnetic. However, because of the various amounts of iron content in each meteorite piece, some may definitely have stronger magnetic attractions than others. As long as the meteorite in question is able to attract any proper magnet, chances are your meteorite is real.
Widmanstatten pattern: One dead giveaway that proves a meteorite’s authenticity is the Widmanstatten pattern. Iron meteorites in particular tend to have an unmistakable and unique pattern that emerges on the surface once etched in acid. It is a completely random interweaving cross-section that is impossible to replicate even by scientists!