Others say...

"Sharp, but watch the brittleness"
I've had a couple of Kyocera ceramic knives and they're great. The extra sharpness makes the knife useful in places where a steel knife isn't great -- slicing large loaves of crisp bread, bagels, bagels, tomatoes are much easier. But I've had both knives crack under use, so you need to adopt your style. Nevertheless, if you want a supersharp knife, these ceramic knives are brilliant.

"Good lord. This thing is sharp."
I received my knife as I was just beginning to make dinner and the timing was perfect. I was immediately struck by how beautiful it was, then I started using it. It's the sharpest knife I have ever used, bar none. Not really much more to say about that, it's just sharp.

If you're researching ceramic knives you know that they have special care instructions. Basically, no dishwasher. And it's meant solely for slicing and cutting, so you won't be prying jars open with this. Of course, you shouldn't be prying jars open with knives anyway, professor.

Buy it. Seriously, it's great. It won't get dull for a LONG TIME and when it does you just send it to Kyocera in California and they sharpen it for free. FREE.

A little advice, though. When you get it don't try testing out it's sharpness on your skin.

"Great blade technology, well-done knife, and IT IS SHARP!!"
I'm very impressed with the ceramic blade of this Kyocera knife. You can see here on Amazon that Kyocera is making a submarket with this ceramic technology. It really delivers -- it's sharp, light, and seems strong in the up/down direction. I've used a lot of different knives across the price spectrum for a broad range of cooking tasks, and this one slices cleaner, faster, easier than any knife I've ever used.

I never *really* imagined using a knife this sharp. It's what I imagine a hand-crafted Spanish Toledo steel sword or Samurai blade would be like. Except smaller. And lighter. And white.

However, be careful! Because it is both very lightweight and very sharp, the knife handles differently than any knife I've used before. And it is sharp enough to do real damage quite quickly. For instance, I received one of these knives as a gift from a friend who had recently got one for herself. It turns out that we *both* cut our fingers in the first few weeks of using our fancy new knives! In each case, we sliced through a fingernail that with a less-sharp knife might have afforded some protection. (I'm typing now with a bandage on my index finger.) I will be very attentive while using this knife from now on!

But, you know, it is a really nice, sharp knife.

The knife comes with care instructions that emphasize the the brittleness of the blade to lateral forces: don't knck the edge against anything hard, don't smack the flat of the blade to crush garlic. No dishwasher.

The special care is a small price for having such a unique knife in the kitchen!

"kyocera ceramic knife"
I don't own this exact knife, but do own a Kyocera Brand Ceramic knife. It is great, sharp, light weight, easy to use. I gave it a rating of 4, for it is still new, recently purchased while in Japan last month (o4/07). So, haven't used it much, yet. My mother bought one for my dad, and I bought one for myself. Also bought the Kyocera Knife sharperner. Was informed this knife would last lifetime, with no special care, just normal care, and sharpening when needed. Will see. My sister's Mother in Law also bought one, for her husband. So, can write a better review later on, after everyone's used it for a bit.

Am interested in purchasing more ceramic knifes and other products, just wish it wasn't so pricey here in the States.