I would have to agree that is a variation of a spiderweb. Those are very sweet blocks and I have to say I just woke up and it is a rainy dreary morning here, as soon as I saw these they brightened by morning. I believe I would have to add a cute (if there is such a thing) a little embroidered spider hiding somewhere in that when you finish it. You are going to finish it, yes?!!!! Have fun with it you lucky girl.