Mine is Ricky Tims's Harmonic Convergence pattern in the center, then square in a square so it is more like one big block. It is still in progress, down to the hand quilting, large ferns in the outer segments. I wanted to sell it originally (and yes I asked permission, and offered my first-born son as collateral! Ricky is a peach incidentally, emailed me back) The purple/green pattern in the center was fabric I bought when I first got back to quilting and was terrified of cutting into it. I absolutely LOVE this quilt!
Ellen