Cultural appropriation is when you are presumed to be making money off of things from someone else's culture or when you are disrespecting it, like by dressing up as someone from somewhere else. Your necklaces are lovely, but they look Native American. If you are Native American, no one will care.
Do * not * tell us your ancestral background; I'm trying to answer your question, not pry or shame anyone. This info is just for you to ponder & so that you are aware.