I want to get mine pierced but I don't know if my mom would let me I am 12 and do you think my age is OK and how should I ask her?

How should you ask her?

"Hey, Mom. Can I get my cartilage pierced?" Simple and easy.

Personally, I wouldn't allow my 12 year old to get it done. Yes, I have a 12 year old.

You just ask her, and show her where you wish it. Depends on the views of your mom.. I personally do not believe a 12 year old should

You just ask her, but I would not let my 12 year old do it.