Stone Type | US Grit | Japanese Grit |
---|---|---|
Coarse Crystolon, Coarse India | 100 | 150 |
Medium Crystolon | 180 | 240 |
Medium India, Coarse Diamond | 240 | 280 |
Fine Crystolon, Fine India | 280 | 360 |
Medium Diamond | 320 | 500 |
Washita | 350 | 600 |
Soft Arkansas | 500 | 1000 |
Hard White Arkansas, Fine Diamond, Medium Black Ceramic | 700 | 1000 |
Hard Black Arkansas | 900 | 4000 |
Ultra-fine White Ceramic, extra-fine diamond | 1000-1200 | 6000 |
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