I love honing on Coticules and honing razors on a large 8x3” slab of Coti from the Les Pétas vein at the Règne mining site at Ardennes is an outstanding experience. While I do have a soft spot for the 130mm hand-held stones, the massive real estate here is to be reckoned with. Especially when honing a lot of blades in succession. Or even just one – the long pass is very efficient and it really lets you get dialed into the honing experience and feedback.
These are really fine & hard select grade stones. Each one is backed with slate which should not be used for honing; it’s there to support and protect the valuable yellow Coticule on top.
