I didn’t ask him, back then, still exhausted from the high temperatures in his workshop I was happy to finally be able to sit. Please guess from the stone colour. It was a finishing stone the last step was the diamond paste on a piece of silk. He used quite a lot actually. We later had a conversation about a finish after the diamond paste. He told me that his master tried some powders on a glass plate but it was too much dirt. We use as a last finish, before we just strop it on leather, a strop with iron oxide, also quite a mess but a really smooth finish.

Интересно, что это за финишный камень