KISEKI: Diamond Whetstone

A blade second only to diamond can be sharpened only by diamond. This is the stone made for the KISEKI: Santoku: a #1200 diamond surface on an aluminium core, set into a base of natural wood that holds it steady on the counter.

The secret is the holder. It slips onto the blade and lets it meet the stone at the same low, exact angle with every stroke, the angle an experienced sharpener spends years learning to hold by feel. Wet the stone, set the knife across the guide line marked on its face, and draw it slowly back and forth until a fine burr forms along the edge, then turn it over and repeat. No special skill is needed, only a calm breath and a few unhurried minutes. The Santoku returns with the clean, effortless edge it first arrived with.

Kept close at hand, it turns sharpening from a chore into a small ritual of care, and keeps your knife at its best for a lifetime of meals.