Ok shave tested earlier today, it was my smoothest shave to date! And i polish with lather on a coti! i rate this stone somewhere above 10000 grit. It is now my finisher after my coti in my honing line up. It's also a very fun stone to use, when i cut it i cut it large 3.3 inches by 8 inches compared it my 1.5 -5 inche coti. A great success compared to all the other local stones i've picked up.