Yes, but only if the sharpener is specifically designed with diamond grinding wheels. Standard electric knife sharpeners with steel or tungsten carbide wheels will shatter or destroy ceramic blades.
Because ceramic knives are harder than traditional steel, they must be sharpened with industrial diamond abrasives. Standard steel or ceramic rod sharpeners will not work. To properly care for ceramic blades, you require a specialized electric diamond sharpener.
Because ceramic knives are harder than standard sharpening stones, the best and only effective way to sharpen them is by using diamond abrasives. You can either use specialized at-home diamond sharpening kits or send them to a professional for repair.
3 Tools to Sharpen Ceramic Knives
1. Diamond sharpening stone: A diamond sharpening stone is a flat grinding stone (similar to a whetstone) with grit diamond embedded inside of it. These special knife sharpeners are perfect for sharpening a ceramic knife.
Yes, you can sharpen ceramic knives, but it is challenging. Because ceramic is one of the hardest materials used in cutlery, traditional whetstones and pull-through sharpeners will not work. You must use diamond abrasives and take your time to avoid chipping the brittle blade.
Ceramic knives are not popular among professional chefs and serious home cooks because they are extremely brittle, nearly impossible to sharpen at home, and lack the flexibility needed for heavy-duty tasks.
Neither is universally "better," as they serve different purposes. Diamond sharpeners are best for quickly reshaping dull blades or repairing chips, while ceramic sharpeners are best for regular maintenance, honing, and polishing a razor-fine edge.
Ceramic knife sharpeners are effective for honing, polishing, and maintaining a sharp edge on metal knives, offering a gentler, finer alternative to harsh tungsten carbide sharpeners. They are excellent for daily upkeep and preventing dullness, though they are not suitable for heavy material removal, repairing damaged blades, or sharpening ceramic knives.
Gordon Ramsay uses a honing steel (also called a honing rod or sharpening steel) to maintain and straighten his blades before every use. For heavier maintenance, professional chefs also rely on whetstones or modern rolling sharpeners (like the Tumbler Rolling Sharpener) to re-profile the edge when it goes dull.
While WD-40 can act as a quick, last-resort lubricant or cleaner for sharpening stones, it is not recommended for the job. It is too thin to properly float away metal shavings, and it leaves behind a residue that can clog stones or cause blades to skate across the surface.
With the right care, ceramic knives can keep sharp longer than steel knives. However, the brittleness of the material means they are more prone to chipping, and even with the right care, they will dull over time. Having them professionally sharpened is the only option to bring the perfect edge back.
The fastest way to dull a knife is by cutting on ultra-hard surfaces like glass, granite, ceramic, or directly on dinner plates. Because these materials are harder than the knife steel, repeated impacts cause microscopic edge rolling, chipping, and catastrophic dulling in just a few uses.
Sharpening a ceramic knife at home requires a very hard abrasive, like diamond. Because ceramic is harder than traditional steel, standard whetstones will not work. You must use a diamond-coated stone or file, maintain a consistent 15 to 20-degree angle, and proceed slowly to prevent chipping the brittle blade.
Japanese knife owners primarily use whetstones (also called water stones) to sharpen their blades. Because Japanese knives are typically harder and thinner than Western knives, traditional water stones are preferred over pulling-through sharpeners or steel hones, which can chip the hard steel.
Pull-through sharpeners are excellent for quick fixes and casual use due to their convenience and ease of use, but they can be highly aggressive. Because they strip away metal to form an edge, they shorten the overall lifespan of premium knives and can alter the blade's original shape over time.
Gordon Ramsay was diagnosed with basal cell carcinoma (BCC), which is the most common form of skin cancer.
Sharpening steels, stones and whetstones are great for home chefs who only occasionally sharpen their blades, and butchers who sharpen one or two knives regularly. But, if you're a commercial butcher who uses multiple knives on a regular basis, an electric knife sharpener is often best for the job.
Bobby Flay most frequently uses Shun knives, specifically the Shun Classic Western Chef's Knife. He loves these Japanese-crafted blades for their lightweight balance and versatility. For smaller, all-around prep, he has also been known to reach for the Shun Classic Hollow-Ground Santoku.
Because ceramic is extremely hard and brittle, you cannot use standard steel sharpening tools. You need diamond-based sharpeners. The best options are the Kyocera Electric Diamond Sharpener for automated ease, or a manual DMT Diamond Whetstone for expert control.
Ceramic knives are incredibly sharp and lightweight, but they are exceptionally brittle. Their major disadvantages include:
Diamond Wheel Precision Sharpening
Chips of up to 1 mm can be removed off a ceramic blade quickly with the electric powered wheel. The knife sharpener features two settings - Fine (#800 grit) and Coarse (#600 grit) to sharpen dull and rough stainless steel and ceramic knives.
Pull-through sharpeners can remove a significant amount of metal from your knife. This can shorten the lifespan of your knives over time. This is especially true of carbide pull-through sharpeners. Ceramic and diamond pull-through sharpeners tend to be more gentle on knives.
The absolute best affordable knife sharpener is the Work Sharp Precision Adjust Knife Sharpener. Priced around $50, it features a guided clamp and angle-adjustment dial that takes the guesswork out of sharpening, delivering razor-sharp, pro-level results on a budget.
Yes, absolutely. A 100010001000 grit stone is the gold standard for all-around knife sharpening. It removes enough steel to reshape a dull edge while leaving a refined finish, making it the only stone you truly need for basic maintenance.