Diamond abrasives are considered the best metals for knife sharpeners. This is due to its hardness and cutting rate that enables a speedy sharpening. It is also versatile that could work even with the very hard ceramics of which some knives are made of. The friction that it affects on the metal enables it to cut through without wreaking havoc on cutleries. They are incorporated into some of the best diamond knife sharpeners that are designed to revive the usefulness of this type of the blades.

10 Best Diamond Knife Sharpeners

Here are the best knife sharpeners in the market:

1. Chef’s Choice Ceramic + Steel Model 700 Electric Knife Sharpener

This three-stage sharpening system of Chef’s Choice is equipped with advanced diamond technology in all its sharpening slots that give the extreme sharpness of both steel and ceramic knives. No wonder it is the best diamond knife sharpener in the market today. Stage 3 has diamond ultra flex, a patent of Chef’s Choice, for a durable and smooth edge that can be used for regular maintenance.

It does not only revitalize blunt blades but also helps repair damaged and chipped edges to bring back blunt cutleries into its factory quality sharpness. This innovative product had incorporated precise angle control and diamond hone technology that creates the arched edges on the sharpened blades to add to the durability of the sharpness of the work of the 100% diamond abrasives.

Steel knives can be sharpened and honed in stages 1 and 3. These initial stages work similarly to set the edge and repair the damage and sharpen the dull blades. Stage 3 hones and polishes the blades to prolong the effect.

2. Kitchen IQ Smart Sharp Electric Knife Sharpener ($$$$+)

Not only does this tool has an angle knob for adjusting the sharpeners to fit various angles of blades, but it also has an interlocking diamond wheel that can sharpen many types of blades making it an almost perfect diamond knife sharpener.

The interlocking wheels work on the edges together at the same time to achieve an equal sharpness of the blade and reduce the time spent on sharpening tools. The angle-adjust starts from 10° to 30° to fit all angles of the blade and sharpen it on its factory angle.

This smart solution not only provides the superior quality sharpness but also provides support and care for knives of all types and makes. It also eliminates the guesswork in sharpening. This very versatile and convenient tool is good to have for those who have an arsenal of cutleries of various materials.

3. Kyocera DS-50 Electric Diamond Knife Sharpener for Ceramic Kyocera Knives

This type of battery-operated sharpener is best used with Kyocera’s line of knives to bring out its excellent performance and is good for people that use that brand of cutleries. It is equipped with electric-powered diamond grinding stones that are suitable to be used on ceramic, steel, titan and stainless. The knife guide slot keeps the knife at an exact angle, and the assist roller prevents over sharpening to provide an even better control, accuracy, and precision.

It is ambidextrous, meaning that, it can be used with ease of both right and left-handed user. The diamond grinding stone can be replaced when worn out to make this unit usable. To use the Kyocera Diamond Knife Sharpener, insert 4 AA batteries into the unit.

Grip the sharpener firmly and switch on “Run” button until the blue indicator lamp lit up. While still pressing the “run” insert the blade on the knife guide slot pulling it from the heel to the tip, gently assisting any curving edge of the knife into the slot.

4. Shenzhen Electric Diamond Knife Sharpener for Ceramic Knives and Stainless Steel Knives with 2-Stage Diamond Sharpening Wheel ($$)

This powerful knife sharpener has a two-stage diamond grindings stones for efficiency. Its universal knife guide slots keep the knife at a V-angle bevel edge with edges of 18° and 20° in its coarse and fine slots, respectively.  The raised design of the guide slot was intended to accommodate knives from heel to tip even for those knives whose blade is level with the handle.

The replaceable diamond wheel is very extensive in sharpening to give that superior razor-sharp edge on the blades. At an average use, these diamond wheels can last up to a year before wearing out. Since it is replaceable, it also renders this device reusable and cost-efficient.

5. Work Sharp WSKTS-KO Knife and Tool Sharpener Ken Onion Edition ($$$)

For industrial quality sharpness of all type of knives and tools, Work Sharp has provided the ultimate equipment for all sharpening needs. Using replaceable and flexible abrasive belts and carefully engineered for precision, this is the best tool to have for versatilities’ sake. It enables the user to provide the exact, accurate and precise sharpening ranging from kitchen knives, outdoor tools, scissors, serrated, and ceramic knives.

The diamond belt has five abrasives: extra coarse, coarse, medium, fine, and extra-fine that is used for several purposes, namely: tool repair, knife shaping, knife sharpening, knife and scissor honing, and gut and serration sharpening. The angle on the rotating knob has 15°, 20°, 25°, and 30° and the speed varies from low, medium and high.

6. DMT W6EFC Three 6-Inch Diamond Whetstone Models in Hard Wood Box ($99.94)

Diamond stones have a reputation for mirror quality work that can be used on all types of knife materials. With a faster cutting rate, it is much preferred than other types of stones. DMT 6-inch diamond whetstone has four diamond grit inclusion: extra coarse for severely damaged knives, coarse for neglected blades, fine for polishing edges after coarse, and extra fine for more refined edges.

These stones can be used for both straight and convex type blades. The micronized monocrystalline diamond has a uniform surface that can create evenly sharpened edges with extreme quality of sharpness.

7. Smith’s 50008 8-inch Diamond Tri-Hone Bench Stone ($$$)

Smith’s line of products has selections of classic sharpening stones made with different abrasives. This 8” Diamond hone has two adjacent diamond stones, the coarse and the fine, and Medium Arkansas stone that is effective in sharpening ceramic and any other metal knives. It can be rotated from its triangular bench for added convenience.

The diamond hones have an overlapping interrupted design to catch metal filings to hasten the work by keeping the surface clean while sharpening, and the micro-tool sharpening pad on the side of the stones is used for sharpening the tip and narrow blades of chisels.

8. Chef’s Choice Commercial Diamond Hone Knife Sharpener ($$$$$)

This heavy-duty diamond knife sharpener is expected not only for very quick sharpening but also to yield a superior and for lasting result. It can sharpen all types of knives, of any materials, and different grinds of the blade, double or triple-beveled, a 15° Asian angle knife, or even serrated knives. There are three stages of sharpening that are equipped with 100% diamond abrasives that also has elastomeric guide springs for precise angle sharpening of the blades.

Stage 1 has fine conical disks that are used to set edges of very dull or severely damaged knives. Stage 2 defines the sharpness by creating smaller microgrooves on the edges to create the durable and lasting sharpness. Stage 3 is equipped with fine abrasive disks to polish and strop the edges and create the third bevel for superior sharpness.

9. Wusthof Black 3-stage Chef’s Choice PEtec Electric Knife Sharpener ($$$$+)

The Precision Edge Technology (PEtech) created by the Wusthof Sharpener guarantees even more sharp blade edges because of its angle of sharpening set at 14°. The angle is slightly sharper than most Asian blades at 15°. Wusthof’s three stages of sharpening is incorporated with diamond abrasive wheels that carve the edges into mirror sharpness. Stage 1 is used for setting edges of the blades.

Stage 2 with the finer diamonds is used for honing and realigning the blades, while the advance stropping materials in stage 3 polishes the knife into optimum sharpness. Since diamonds are very aggressive in cutting, Stage 1 that has the coarse grit that could practically remove more metal from the blades and should not be used frequently.

10. KME Precision Knife Sharpening System with 4 Gold Series Diamond Stones ($$$$$)

The KME Precision Knife Sharpening System is a complete set of tools for the convenience of not having to purchase separate appendages for sharpening. This latest kit features four diamond Gold series of KME with abrasives of extra coarse, coarse, extra fine and fine; a rod guide and rotating clamp for angle adjustment of one-degree increment from 17° to 30°; stone clamp; a cleaning cloth and a water bottle all in one hard case. This is a complete package of precision and a superior quality best diamond knife sharpener to salvage damaged knives back to life.

Diamonds can last a lifetime. That’s what makes them the best tool to pair with all types of knives including ceramic ones. They are preferred because of their quick and precise result and is used in most electric knife sharpeners because of these qualities. Diamond knife sharpeners are extensive when it comes to cutting edges and simplify the sharpening job for instant result.