I am going to prove I can read the ancient language and I will show you how. First, hold the stone by the grip, you will know the grip by the feel and if you see markers align them "Vertically" now get up and walk around to change lighting and you tilt your wrist side to side (east-west) and hold the grip because it tells you to look where the grip guides, adjust lighting and many times the art is right there. Look for miniature art which is either man or an animal. When you make your first discovery, you will never be the same, it changes everything about your artifacts.
If you are in the Shreveport / Bossier area I would come show you. Email me some photos and I will do my best to show you what to do. Bill Waters firstname.lastname@example.org