Thank you! I give different answers depending on how much I think I should say. I'll tell it all, no reason not to. Sometimes it represents the imperfection of the world (seven days, seven seas, seven continents, etc - seven comes up a lot in Christian theology). Other times it's a Thelemic sigil that represents the splitting of the atom in occult terms - thaumo nuclear weaponry. But the answer I like best right now is that the elven star (the 7:3) is a ward against evil, and this represents a failure or a doomed attempt to resist evil. A reminder to resist even when it cannot be beaten. Sometimes you don't fight to change the world, you just fight to stop the world from changing you.

I like having multiple answers. You never know who's going to ask, and anyway I have a healthy dislike of certainty. I try to hold ideas lightly.