I have seen cerium oxide before, but only for use in stone polishing, and at too coarse a grit to be applicable to razor sharpening. Today I have just come across a UK supplier of 0.5 micron cerium oxide powder.
Anybody think this will be comparable to chromium oxide? I just thought that it may be something new to try out.
Nick

http://www.logitech.uk.com/ProductCa...2&idproduct=81