One of the most unique blade designs, the Yakutian knife comes from the harsh region inhabited by the Sakha people. A concave fuller on one side of the blade and a convex surface on the other, this knife is sharpened by removing material on one side of the blade only. The edge geometry remains the same for the life of the blade.
Usually set in a birch burl handle, the Yakut knife had the ability to float, due in part to the lighter blade of this design.
It is unclear how this unique blade design originated, but the benefits are clear: a stronger, lighter blade, and one that might require less steel to make than comparable blades of other design.
Some believe the design mimics a knife made from a large animal bone, where splitting the bone in half lengthwise reveals a concave side and a convex side.

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