What a beautiful block! If you look at the spot where the two irish chains come together, you can see that it is a 25 patch and that it is the same size as the Golden Glow block. That is 5 squares across and 5 squares down. If your squares finished at 2 inches, that would make the block 10 inches. And if your squares finish at 2 1/2 inches, that would make the block 12 1/2 inches. Hope this helps.