I dug out that small jewelers stone, and lapped it out a bit. I don't have any supper fine sandpaper, so after the course DMT I tried to give it a go on a ceramic stone, which IT lapped the ceramic. I tried again on a black Ark, and they both were wearing on each other, so this thing is close in hardness to an ark. Slurry off the DMT is an off white/creamy color with a tendency to clump up. Of course, my color perception is pretty lousy, so I might not be seeing what I think I see. This is her, with water.
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