Molybdenum when alloyed with Vanadium and steel is a long
lasting knife, Carbide is good as long as it's alloyed with steel, as
in the the Miyabi Artisan SG2. The ceramic knife is a little too
brittle for some uses but it is sharp
I wanted a Unobtanium knife but it would've cost about
500,000 US smackaroonies....