So here is a Tetragrammaton. Some pronounce it Tet-Rag-Ram-Mat-On. I began to study this unusual talisman and came up with so many theories my head began to hurt. Therefore all I shall say is that it is important to both the Jewish and Freemasonry folk. It is Powerful. The rest is up to you. This Tetrammaton is also a Suncatcher. It is just over 10cm and hangs on a 23cm metal chain.