You need a professional or a very fine diamond sharpener if you want to sharpen a ceramic knife in particular.
How to sharpen ceramic knives.
Store your ceramic knife in a wooden knife block or specialized knife case to avoid accidentally putting blade dulling chips in the blade.
Again remember to wear cut resistant gloves when sharpening ceramic knives with a sharpening rod.
While holding the sharpening rod vertically or horizontally strike the blade against the rod about three times at each side.
The good news is that ceramic knives don t need to be sharpened as often as steel knives.
Ceramic has a hardness of 9 5 as opposed to steel with a hardness of 6 5.
These experts can sharpen the blade using a silicon or diamond carbide grinding stone.
If you apply too much pressure to the side of the blade it could easily snap.
How long a ceramic knife needs sharpening depends on usage.
The problem with sharpening ceramic knives is that ceramic blades are very brittle.
The bad news is that it s very difficult and or expensive to do so.