Belgian Coticule Whetstone


The Vielsalm Coticule stone is a natural whetstone with a rich past. The extraction and production of the Coticule in the Belgian Ardennes dates back to the 17th century. It is a sedimentary rock formed over 480 million years, consisting of grey-yellowish volcanic ash and clay containing hard garnet crystals. The Spessartite garnets are create...


The Vielsalm Coticule stone is a natural whetstone with a rich past. The extraction and production of the Coticule in the Belgian Ardennes dates back to the 17th century. It is a sedimentary rock formed over 480 million years, consisting of grey-yellowish volcanic ash and clay containing hard garnet crystals. The Spessartite garnets are created by a rearrangement of minerals under the influence of regional metamorphosis. Due to a whim of nature, the Coticule only occurs in thin, vertical seams, trapped between two thick strata of bluish-purple slate. This means that the stone needs to be extracted meticulously and mostly without using machinery. This extraction is very time-consuming, labour-intensive and expensive work that can only occur a few months per year, due to the influence of all kinds of weather conditions. The production is 100% traditional and makes every stone a unique item.


Use only water when sharpening, not oil.

Oil is only used with porous stones to prevent iron particles remaining stuck in the pores.

Working life of stone: The working life depends on the use. The more intensive the use, the faster the stone will be worn away. Generally speaking, whetstones last 20 years in normal use.  

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Belgian Coticule Whetstone There are 3 products.

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Showing 1 - 3 of 3 items