Sharpening Stone Comparison Guide | ||
| Compares approximate abrasive grit relationships of American and Japanese stones. | ||
| Stone Type | US Grit | Japan 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 |
| 1200 | ||
| Hard White Arkansas, Fine Diamond, Medium Black Ceramic | 700 | 2000 |
| Hard Black Arkansas | 900 | 4000 |
| Ultra White Ceramic | 6000 | |
