I thought it might be a preform, blank, or something when I first picked it up. But it fits my hand perfect for cutting or scrapping... and only one way, it's not as smooth a fit in the hand if you hold it from different positions.. just one way fits perfect and it makes a sooth cut on that cheese. I feel it was a tool for sure, knife, scraper, both.. who knows, but it's an artifact.. and the black color is on both sides.. not sure if it is a fire mark or not..