It is a fragment of a natural whetstone mined in Honyama, Kyoto Prefecture.
The surface can be planarized with a diamond grindstone for use.
It is also possible to divide a piece with Hammer and put a thin piece on your fingertip to sharpen the knife.
It is a genuine piece of natural whetstone.
Specification
        Status:
                            
        
                Brand New
        
        Natural or Artificial:
                            
        
                Natural whetstone
        
        Mining location:
                            
        
                Kyoto Nakayama (Honyama)
        
        Size:
                            
        
                According to image
        
        Weight:
                            
        
                According to image
        
        With or without box:
                            
        
    
                        
        Without Box
        Review
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