I have been going through my grandpa's collection and some just look like rocks, while others look like the real deal. Then there's some that leave me scratching my head and not sure what to think. One of these that I'm posting is a flat stone in a teardrop shape with slanted sides. I wouldn't be surprised if at least a couple of these are just rocks, but pretty sure a couple others are something. Figured I'd ask you all as I've been getting some very helpful feedback. Not sure if it's better to post individual or several at a time? Just hope it's okay for me to keep working through the collection with all of your experience to separate the treasure from the rocks.