a really heavy half of a broken whetstone

Time has consumed the wooden frame which once held this stone. It would be no use reconstructing a new one either for while half of the stone is intact the other half lies on the ground broken into numerous small shards.

You need to pick it up first.

You identify a really heavy half of a broken whetstone.
It is an unsellable object.
It weighs fifteen stone and ten pounds.
Its keywords are stone, whetstone, and broken.