So I was bored and just looking at prices of hones because I have HAD but I don't have MAD (money acquisition disorder, or is it a disorder because I am not acquiring enough of it?). Anyways, I came across "the perfect edge" and saw there natural waterstones. Well thats it. I have never heard anyone mentioning them on here and it doesn't say what or where it was mined from. Anybody know anything about them. How do they perform. What are they?