This article has hardly anything to say about the interesting or practical qualities of this knife and instead lays on thick with the "only terrorists would have one" rhetoric. That's really weak. This is an interesting use of alternative materials to make a better, sharper, and more durable knife - very sci-fi.

Surgeons sometimes use sapphire or diamond-bladed knives, if they care for the expense. Why can't an enthusiast or collector possess one without being called a terrorist? And with the advent of artificial diamonds, soon maybe everybody who cares to can have a decently priced diamond-headed razor: for shaving (won't go dull, better shave), or for the kitchen the ever-sharp blade(smoothest cut you'll ever make), for first aid/EMS providers (easier to cut off your seatbelt and get you to safety from a car wreck), for hunters, law enforcement, military and tactical use, and even for those of us who just carry a swiss army knife - never have to worry about sharpening again.

splayed is absolutely correct in his assesment of the commentary IMHO. However, Why not house the blade on a nice titanium or steel handle? (Im sure it'd be a nice way of saying.. hey we want to make a cool knife, but we dont want to be responsible for terrorist use)

The point is it'd be just as easy to de-terrorize this item by adding metal to some aspect of it, than to produce it as a totally metal free alternative. Personally, I think the the possible uses are great, and there ARE a lot of practile uses. However, all you have to do is slap on some metal and the "terrorist" aura goes poof w/out, most likely, drastically reducing the knife's worth & economic demand.

There are, of course, holes in my argument like anything else.. and, of course, a terrorist could just rip the metal off (in most cases).

Not to mention the fact that im sure airport screeners will rapidly find a way to detect these knives as well.

However, all in all, why ing market an object so obviously useful for terrorists when you can easily make it de-terrorized & still a cool thing.

Personally, if they ever sell this as a kitchen item.. with a pretty METAL handle, I'd love to own one.

Fantastic knife, terrible fear mongering by the author.

I've seen blades made out of obsidian stone for years. Deffinately not as tough as the sapphire blade, but will also not set off metal detectors.

if a terrorist wanted to sneak a weapon past security there have been grivory* and ceramic knives for years. In fact until diamond blades the sharpest blade in the world was a acid sharpened ceramic.

*grivory is a type of plastic made from nylon and fiber-glass that holds a decent edge.

furthermore, from grivory and other synthetics, guns can and have been made that can fire tungsten carbide or more affordable ceramic bullets; all with very little to no wear on the weapon.

meaning a diamond knife would be a flashy weapon with little required maintenance but still not as dangerous as a plastic gun.

Splayed almost has a point, but obviously thinks a surgeon might want to operate with a Sapphire bladed knife in the shape of a Japanese TANTO ?? A tanto is a killing / fighting knife - and any knife maker with a tiny amount of moral responsibility wouldn't enter such a knife with an 'undetectable' construction.
Surely if the knife was for collectors interest a metal handle wouldn't put off keen buyers.

I am seeking a knife, 3.5" blade, that is totally non-metallic except for possibly a beryllium copper spring if it is an assisted folder. I think the Blackie Collins folder I have would be pretty good if there were a ceramic edge laminated into the polymer blade. I know for a fact that this knife will pass through airport "security" as I have carried it aboard scheduled commercial airliners on many occasions. Unfortunately, it will only thrust and not cut well. With a ceramic edge it would be able to slash as well. I would probably make the ceramic edge in a number of individual segments so as to allow for a certain degree of flexing of the blade without the edge breaking. Any thoughts on the practicality of this idea?

Aw c'mon, lawman... terrorists use box cutters. Tanto shape has nothing to do with it. It's not the shape or materials that makes a "fighting knife", baby. It's the man behind the blade.