I got some black decor rocks they appear to be river rocks. But I just read a forum about rocks and I was wondering if they are safe or not. I really want some black rocks, but I don't want the gravel that you buy at petstores as they don't look as natural. But now I am afraid they may be poisones or something they are made by akash and are japanese black gravel I believe. Anyone know about these rocks or can tell me if they are safe or how to tell if they are safe. If they aren't I will just return them and keep looking.