Unresolved square mysteries gathering!
If you're a proud proprietor of a natural hone you can't find a name for.
Come and shovel them in!
Anything non carborundum you can show us,
will make you a member of "The X-Hones" and eligible to wear this badge:
http://www.olivia-seife.de/images/xhonesig.jpg
Help resolving those mysteries is highly appreciated,
even if it leads to the sad fact that these stones are not natural.
I'll start with three of them.
They all came in wooden cases and have been abused as oil stones previously.
http://www.olivia-seife.de/Messer-Da...terybright.jpg
http://www.olivia-seife.de/Messer-Da...t_makro_01.jpg A Detail about 5 x
http://www.olivia-seife.de/Messer-Da..._2_mystery.jpg
http://www.olivia-seife.de/Messer-Da...ysterygrey.jpg
This last hone is of a higher grit, pretty thirsty for a natural and it glazes fast. Slurry is white.