Hand treated agate blade, deer antler handle, moose bone caps.
This is a real useable knife. It will keep it's edge for a long time if it's not used against bone or other hard material. Stone knives are created by a process called flint knapping which is removing flakes to create an edge. This process produces a very sharp edge. Sharpen it by knapping with an antler or copper tool. Often stone knives are made of obsidian which is much finer than steel and is used in surgery. May other materials also make effective knives.