The one used in the movie is extremely beautiful, due partly to the excellent polish, but I haven't been able to find it online. Must have been a one-off.. Anyway JK knives are hideously overpriced for what they are ('luxury' items), so I don't know what kind of deal he cut with the movie producer to have his knife featured in the film.
Anyone know what kind of knife the bad guy has? That's just as beautiful as the JK.