I need you to find out what this double line J thing is. It is on a very weird brooch with some interesting symbols. If I can figure out what this means it will be simple. This is a bat brooch with a star then the J symbol, next a upside down equilateral triangle then finally a crecent moon. It is 10k and has the intials or some kind of marking GB on the back. If you would be so kind as to help me I will give an award to who ever trys, so try hard. NO SILLY ANSWERS WILL BE EXCEPTED!
