ViperSharp Diamond Sharpening Stones are here! The coarse diamond stone is perfect for re-profiling a damaged blade. The ViperSharp diamond stones will give you an amazing edge no matter what steel you are working with. Diamond sharpening stones are known for their longevity and ability to sharpen even the toughest steels. The ViperSharp diamond stones are a continuous monocrystalline diamond surface on steel plates. This is a new thing for the ViperSharp and I am working with a slight delay for each order on these right now. Once we have a continuous stock of diamond stones the price will go back to the normal price so get yours while they are cheap!