I think I've said before, this is a very complex subject. When you write down all the physical characteristics of a rock or mineral and you start considering the varying parameters as these characteristics change you begin to appreciate why the best honing stones in the world are so rare and expensive. You could write a scholarly thesis about this stuff.

Any rock will act as a hone to one degree or another. You could experiment with anything and everything and one change in one parameter could trump everything.

Now I've got this chunk of Zoisite (a Calcium Aluminum Silicate) with tiny ruby xtls in it and if I wanted to sacrifice this and grind it down it might make a great hone but it's rare and I won't.