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Special Series

Belgian Blue Whetstone

All natural whetstones are different. Virtually every country in the world has its unique natural stone. Belgium has Belgian Blue Whetstones known as BBW. BBW has a high garnet content, and garnet crystals give it extraordinary properties. Usually sharpening grains must have sharp edges to be high-abrasive. Garnets have dodecahedron shape (ball with 20 vertices) which perfectly suits purpose of ultra-fine sharpening and polishing. Size of one garnet is 10-25 micron.

This is how BBW looks like in nature. You will notice a thin yellow layer inside the rock of brown BBW. It's Coticule, the rare and expensive whetstone, a satellite of BBW.

The surface of BBW has distinctive texture:


BBW is universal and can be used on stainless and high-carbon steels of any hardness and composition. BBW creates a very accurate cutting edge if pre-finish sharpening is made without flaws. 

BBW is available on Gritomatic in Edge Pro format.