If they load up, they may be Super Stones, but I do know that the 8k Snow White is like none of the other Chosera line. I have heard good thing about the 10k but do not have one. I have heard the 10ks craze as well.

The Snow white is aggressive and super polisher that can equal the 12k in finish, but they craze and can crack. Even crazed mine still works just fine. I bought a new replacement but it does not polish as fine as the old one, perhaps once it breaks in.

I like it so much I bought an extra, back up in case they stop selling them.

The glass may be similar to the Snow White and glass backed to prevent crazing. The Super Stone load up is a Pain in the butt and will damage an edge. You should lap a Super Stone clean for the final finish laps or the swarf can chip the edge. For that reason, I have not used a Super Stone in years.

I usually do a 1/4/8k Snow White progression then to a natural from the pristine Snow White bevel.