Frequently Asked Questions

What are Keramikos Kitchen ceramic knives made of?

Keramikos Kitchen ceramic knives are made of an advanced, high-tech ceramic called zirconium oxide (also called Zirconia). Zirconium oxide is extremely hard, wear resistant, and chemically inert. Zirconium oxide has a hardness of 8.2 on the mohs scale of hardness (vs. steel at 5-6 mohs and diamond at 10 mohs).

Will a ceramic knife break if I drop it?

Any knife, whether stainless steel or ceramic, will potentially break at the tip if it’s dropped on a hard surface and at a certain angle. Unfortunately, accidental damage can occur so we do offer a lifetime warranty on all our ceramic knives.

Do ceramic knives need to be sharpened?

Ceramic knives rarely need to be sharpened. They stay sharp 10X longer than a steel knife. Therefore, It will be many years before you will need to have your ceramic knife sharpened. Keramikos Kitchen offers a lifetime sharpening service.

What is the difference between a black ceramic knife and white ceramic knife?

The white blades are kilned at 1200 degrees Fahrenheit which results in a hardness of 8.5. The black blades are double-kilned for an additional 48 hours at over 4000 degrees Fahrenheit, which is why they’re black. In the process they become harder, resulting in a hardness of 9. What this 0.5 of a difference means to you is that the white will retain their edge for 2-3 years while the black will retain an edge for 3-5 years.

How can I damage a ceramic knife?

The ceramic blade can chip if you cut into bones or can break off if you use it to pry. Any high quality steel knife will also have little to no flex. Just like them, your ceramic knife will snap if too much torque is applied when prying. Unlike them, if you break your ceramic knife, you get a new one

Are ceramic knives sharper than steel knives?

Ceramic knives start out sharper–and stays sharper–longer. In time, you may notice micro nicks on the blade’s edge. This is the normal process by which any hard material blade will dull. The existence of microchips does not necessarily mean the knife is dull. You will find that it performs well for quite some time.

Can I put my ceramic knife in the dishwasher?

Although Keramikos Kitchen ceramic knives are dishwasher safe the answer is no. Ceramic knives can chip or break if they come in contact with other utensils while the cycle is running. The ceramic blade can easily be cleaned with a dish cloth.