The discovery of "De Blauwe Wetsteen"
The world's only mining area in Lierneux Wallonia Belgium
In collaboration with laboratories at the University of Liège, the new management of the last remaining mine had the geologically close layers of the traditional yellow Belgian boulder examined in 1996/1997.
With astonishing results: a high-quality natural sharpening stone was discovered with almost identical properties in a blue-grey color. This coloration was caused by the high proportion of iron oxide. The blue Belgian chunk contains approx. 30% naturally embedded garnets and has a grain size of approx. 6000. When sharpening knives, this vein is somewhat "slower" than the yellow Belgian chunk, but more durable.
Blue veins can occur in thicknesses of 15-20 cm. Yellow Belgian chunk veins are usually only a few mm thick.
We produce large-format bench stones, shaped chisel stones, hollow chisel stones and multi-shaped stones from the relatively thick blue-grey layers. The individual adjustment (radius, angle) of your profiled stones is easily possible with sandpaper.
