The slate measures 10cm and comes foam pads underneath to protect the furniture. As we only use the 100% natural raw slate and hand-cut it to shape, irregularities on the surface /sharp edges & corners and tiny chips off within the finished designs are to be expected. All We need is the tile...e.g. Miss and a surname...e.g. Johnson's This can be left during checkout, though if missed can be messaged through your order.