We have been getting our hands dirty; squeezing, squashing and prodding a dark earthy heavy lump of clay.
Even as we were using it, so it was changing, slowly turning from a glistening black to a drier greyish white. We found that we had to keep our hands wet to stop our clay drying out and crumbling as we worked it. It became more and more difficult to make it into the shapes that we wanted.
We want to know whether, once it has dried and gone hard (as we believe it will) it will be possible to change it back to its original glistening black or whether the change is permanent.