Yes>>> NO & yes
According to a machinist's textbook I have it claims that Silicon Carbide is rated as the sharpest and hardest of all of the synthetic abrasives. As far as the ceramic stones on the 204 Sharpmaker I don't think that those stones are made from Aluminum Oxide per se. From what material I have on them it says that they are made from a high Alumina ceramic which is a whole different animal all together. I am certain that the ceramic is much harder that Aluminum Oxide or Silicon Carbide on the Moh's Scale of hardness.
Originally Posted by jerseybounce_42
Flitz is great stuff if you don't need an abrasive cleaner. Flitz has other products that are great. Their polishing cloth is fantastic and so is their metal wax. Hope that helps
Long Live the SPYDEREDGE Spyderco Hawkbills RULE!!