Someone gave me a piece of jewelry with the inscription “Lava stone is a grounding stone that helps us connect to the energies of Mother Earth and the element of fire. It can help to dissipate anger and absorbs negative energy.” and i am conflicted as to what to do with it. Is it bad to use it?
Those are lava rock deposits and do not contain any special healing properties despite what the New Agers say. So insofar as you do not attach any magical meaning to it, i do not see why you cannot use it.
The issue would be if you are overly attracted to the symbols and go after them yourself. If you received this as a gift, there’s nothing in it that should stop you from using it.