Looking in the Graingers catalog, and online at Woodcraft, see that DMT makes a 9 micron whet stone, which would be the same as 1800 grit. Anyone ever uses one for a beginning hone for setting a bevel? It's a bit finer than a 1K Norton etc, but since it's diamond, I have heard that they cut fairly quick.
Just curious. WoodCraft has them for about 46 dollars and a little higher at Grainger.