I'm still new to honing and stones so i was wandering how one recognizes a natural stone? i've had the opportunity the last couple weekends to go through some boxes of stones and picked up this one.
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the thing that made me think that is was natural was the appearance of saw marks on the end.(i tried to get a picture but it didn't come out visible), the one side is badly dished but the other side is flat. it has some scratch like marks on it. do i need to lap it?
thanks for your help.