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Naniwa Diamond sharpening stones

With the Naniwa Diamond sharpening stones you can sharpen kitchen knives made from incredibly hard steel. Even ceramic knives will be as new after being sharpened on these diamond sharpening stones. The Japanese stones are comprised of an aluminium block, with a one mm thick layer of diamond grains on top. As binding agent Naniwa uses resin, perfectly aligned to the grain size of the sharpening stone.