Originally Posted by
DaveW
I don't think ceramic or not has anything to do with the slurrying ability. It has to do with the type of abrasive in the stone. Ceramic alumina is a tougher abrasive than aluminum oxide used in older stones.
At the risk of butchering exactly what the difference is between all of the abrasives:
* aluminum oxide is a term thrown around, but there are a lot of different types. it's a sharp abrasive that at least in some versions is friable
* ceramic alumina is a type manufactured by a process that makes it very tough
What makes a stone "ceramic" or not is probably whether or not it uses ceramic alumina. The binder will be resin (like a shapton), magnesia (like a chosera), or maybe even vitrified (old norton india stones are vitrified, but they are not ceramic alumina as far as I know).
So if you put ceramic alumina in a resin or magnesia stone that has a soft binder, it will still slurry. If it slurries fast, one would wonder what the reason would be to have such a tough abrasive, because it won't be around long.