The How, Why, and When of Diamond Stones
Diamond Stones are the cornerstone of Wicked Edge’s guided angle sharpening system. Designed for durability and precision, these stones offer consistent results across hundreds of sharpening sessions. In this guide, we’ll cover how Diamond Stones work, why they’re essential to your sharpening progression, and when and how to clean or replace them.
Why Use Diamond Stones?
- Exceptional longevity: Our Diamond Stones use monocrystalline diamonds, the longest-lasting and most abrasive form available. You can expect 500–700 sharpening sessions per set.
- Unmatched hardness: Diamonds are harder than any blade steel, including modern super steels. That means fast, effective sharpening on any knife.
- Low maintenance: Unlike whetstones, Diamond Stones don’t need flattening and don’t require oil or water during sharpening—making cleanup simple.
When to Clean Diamond Stones
Diamond Stones build up metal debris over time. We recommend cleaning them about every 25 sharpening sessions or sooner if they seem clogged. Keeping them clean helps maintain cutting performance and extends the life of your stones.
Quick Cleaning Method
- Spray with Windex or apply rubbing alcohol
- Wipe clean with a paper towel
Deep Cleaning Method
- Use a toothbrush or scrub brush (like the one shown in the first image above) with warm water and dish soap
- Gently scrub the diamond surface
- Rinse thoroughly
- Stand stones on end to dry overnight, as seen in the second image
For Heavily Clogged Stones
- Soak in white vinegar for 10 minutes to loosen metal buildup
- Then follow the deep cleaning steps above
- You can also use an ultrasonic cleaner on the lowest setting if available
Understanding the Break-In Period
New Diamond Stones have a rough, uneven surface due to the electroplating process. This outer layer needs to be worn down before the stones become consistent. Expect a break-in period of around 20 sharpening sessions.
Break-In Tips
- Use the included Practice Knife or an inexpensive blade you don’t mind roughing up
- Avoid using new fine-grit stones in your regular progression until they’re broken in
- Never rub Diamond Stones together—this will damage them and void the warranty
How to Extend the Life of Your Diamond Stones
While Diamond Stones are long-lasting, how you use and care for them makes a big difference.
- Sharpening harder steels: Requires more strokes and wears stones faster
- Heavy reprofiling or repair work: Uses more abrasive action than regular touch-ups
- Keeping stones clean: Prevents clogging and ensures full abrasive performance
- Using light pressure: Reduces wear, improves results, and protects your blade
When to Replace Diamond Stones
Over time, even the toughest stones wear out. Look for the following signs:
- Visible bald spots: Areas where the aluminum platen shows through, often in the middle or edges
- Reduced sharpening performance: Takes more time or effort to achieve the same result
If you notice these signs—like in the third image above—it’s time to replace your Diamond Stones. Normal wear is expected and not covered under warranty.
Learn more about our full lineup of Wicked Edge Diamond Stones here.
