A long time ago when I started out in silversmithing we used pumice
and scotch stone as part of the polishing process, I have been
saving a remnant piece of the pumice which I have now used to finish
a small bowl. The grain of the polishing with the pumice is random
and catches the light in an beguiling way.
I would like to find more pumice. I have tried looking on the web
and found one source who sent me a sample. Unfortunately, the pumice
is coarse and filled with impurities which scratches. I think the
original source that long while ago was Italy. Does anyone know what
I am talking about and, more importantly, does anyone have a source
of pumice of the quality I want/need?