Thread: What actually is Hardness in natural stones, and how it affects sharpening

Yep i think too that there are different prefferents on the edge, coticule is a lot coarser then a Jnat but still shave very nice and sometime better, the hybrid coticule that i have is a lot harder then my Ozuku but stil bit coarse but shave is super nice like any jnat !

For hardnes there are a lot of different stones and hardnes and you cant prove them all i have a Okudo suita that is lv 5 hardnes but lv 2 fines, so you cant realy comper hardnes on Jnats or others natural stones you just have to try them and give approx value on fines and hardnes and what they have to be used for there is not realy right answer here !! Becouse they are all different !!