AB stands for aurora borealis. Northern Lights? You've never seen the Northern Lights? These are not leaded glass so the rainbow effect will be less or not at all but you still get the looking through a fly's eyeball effect if you get too close. They can't take that away from you. These have a hole across the top so you can hang them from fish line. Some may have slight scratches or nicks on them. Sorry. From China!