Are these real?

[Earth]

Someone gave me these a long time ago. Now that I'm into rocks, I though I'd ask, are they molded or are they real? Can you tell? And what in the world are they? They're heavy, don't seem to break, and shiny. Fossil? Fake Fossil? Polished Fossil? I know, I'm a beginner....

 

[Eu_citzen]

Ammonite, most likely. Yes, real and natural fossils.

 

[Earth]

Ammonite, most likely. Yes, real and natural fossils.

Thank you...