Magic Forums

So, a while ago, I was cleaning my room out, as we were moving, and I came across a strange pendant. I asked my family if it belonged to any of them, none recognised it. It's quite strange, I've never seen one like this before.
It's carved on a soft grey stone, easily scratched.
It has four triangles, two next to each other at the top, then one at the bottom, that is behind the other two, the last is a small triangle in the middle.
Kinda like this-
/\/\
/\
/__\
Anyone have any ideas? The shape I've provided is rough, so I can post pictures of the pendant. It looks to be old.
I've asked quite a few people about what it may be or it origin, but no one I've talked with so far has any idea what it is.