This Buffalo Rib Bone Obsidian is handmade by master artist Dale Duby using the methods of old; grinding, abrading, percussion and pressure flaking. Each knife is one of a kind and the blades are attached using sinew. Comes with Certificate of Authenticity signed by the artist. Size is approximately 7-1/2 overall. Includes hand carved stand. Please note: This is not an authentic Indian made product. read more..... View more Dale Duby products Each of these knives is handcrafted of naturally occurring materials, with as little alteration as possible to preserve its natural beauty. Each handle is minimally worked to save most of its original shape, so color, grain and shape will vary from the knife shown in the photo, guaranteeing you that the knife you purchase will be one-of-a-kind.