I don't know... I almost don't want to say this because I sincerely don't mean to be rude, but I don't understand why so many people pick up things that are clearly just random rocks that are all over the world and haul them home think they're something. Everyone starts somewhere and needs to learn, but I think just about everyone knows what an arrowhead / projectile point / or something looks like. Some good questions to ask would be "Does this look to be purposefully shaped or worked by man?" and "What would this be used for?"