Return the crystal. Mail it with a short explanation, no identifying name/return address etc.
You'll get rewarded in Life, if you do.

Meanwhile, ask your mother what the hell is wrong with her!
Does she not understand that a mother's job is to teach her children to have morals ??

What does she do when she sees a homeless sick person - kick 'em in the shin and steal their 40 oz beer?
Does she lurk around the elementary schools, push the kids down and take their lunch money?


Damn, sorry you were bore by such a creep OP.
I mean that sincerely.

I'm really proud of you though, for having an innate sense of right and wrong. God knows it wasn't something that was taught you at your mother's knee...

I'm sending motherly hugs and warm thoughts your way sweetie.
I'm truly sorry for your situation.

Now get out there & do the right thing, eh?