This is a traditional Siberian hand forged Yakut /Evenki knife.
BLADE: 4 “ long Forged D2 (Х12МФ Rus) high carbon steel. Thickness 5 mm.
Handle: 5 “ long Birch Burl
The sheath is crafted from the birch bark and treated with natural oils and beeswax. The belt look is crafted from genuine Leather.
The Evenki knife's unique concave/convex geometry sets it apart from every other knife. http:/l/yakut-knives.com