When I was a kid my parents were pretty much obsessed with the Pueblo tribes and their culture. One of the most iconic artforms of this culture is the black-on-black pottery made by Maria Martinez. Their technique was apparently an ancient one that they rediscovered. You can read about it here: http://www.collectorsguide.com/fa/fa024.shtml
In any case, I always loved the look of these pots and where we lived in Colorado had a huge hill of pretty much pure clay. So one day when I was in 7th grade I tried her technique or as close as I could come with no google to help! LOL It actually turned out pretty good. I don't think this (the only pot I ever made) still exists but I did use my own clay. I never sieved it or anything as I did not know about that and it still worked. I wood fired it in a little kiln I built out of river rocks. Anyways... Just thought I would leave that link as I think you will dig it.