Mexican coral in my aquarium?

[JOKERacing]

Hi i am a newbie here and have a simple question.

i just setup my aquarium with some live rock i bought at JL aquarium.
Its been in my aquarium for about 2 days now. So my question is i got some coral from my mother inlaw that she got in mexico. Can i just put it into my aquarium or will this do something detrimental? I have no idea what kind of rock or where she got it from only that it was from mexico?

thanks