Earlier this month I attended the Nebraska Mineral & Gem Show and met a vendor who was eager to unload some mahogany obsidian slabs. This is the first knife, from those slabs, next to a cleaned slab. They are laying on a couple sawn slabs. Knappers will use sawn slabs to conserve good stone. The knife is 10-inches long, in a elk antler handle, wrapped with sinew.
This blade has already tasted blood...cut my finger handling it...>ouch<.