Where do I step to buy some strong acetone? I need to bring back some superglue off of a crystal, but...

I need to bring back some superglue off of a crystal, but it's stuck on really regard as and nail polish alone isn't strongenough to cut it. Can anyone recommend a non-online place to draw from something stronger? Do I go to a grocery story, a department store approaching Sears, a hardware store, or what?
Answers:    I don't think you can return with dangerous Liquids mail. Just go down to your local hardware or a store approaching kmart and get some pure acetone. See if you own some other thinners like white spirits surrounded by your house and try that.
any hardware store will have it within the paint section of their store