This is the world's onlycombination diamond and Belgian Blue garnet honing puck. The 350 grit diamond surface is perfect for getting started sharpening your axes, knives and tools. Add a small amount of water to the 4000 grit Belgian Blue surface and let the garnet "mud" do its magic! The puck is 3" in diameter and laser engraved with the B&C logo.
What makes the Belgian Blue stone so unique is its garnet crystals. The garnet slurry created when wetting the stone makes for a fast, clean, and nearly effortless way to maintain an edge.
These stones have been mined in Belgium since at least the 1st century A.D. and are mentioned in Pliny the Elder's Natural History published in 77 A.D.!