Granitestone NutriBlade Knife Set: What to Expect

The Granitestone NutriBlade knife set is part of Granitestone's expansion from their popular non-stick cookware into kitchen knives. If you've seen it advertised and are wondering whether the NutriBlade technology is a real innovation or marketing language, here's the direct answer: it's primarily a marketing term for the non-stick coating applied to the blades, and the actual knife quality is in the mid-budget range.

This guide covers what the NutriBlade set includes, how the non-stick coating actually works, performance expectations, and how it compares to alternatives.

What Is the Granitestone NutriBlade?

Granitestone is known for their granite-pattern non-stick pans and cookware. The NutriBlade knife set applies the same non-stick coating concept to kitchen knives. The blades feature a coating designed to reduce food sticking, similar to what Kuhn Rikon has done with their colored knife coatings.

"NutriBlade" is the product name/branding. It doesn't refer to a specific steel alloy or construction method. The knives are stainless steel with a non-stick surface coating.

Set Contents

A typical Granitestone NutriBlade knife set includes:

  • 8-inch chef's knife
  • 8-inch bread knife
  • 7-inch santoku
  • 5-inch utility knife
  • 3.5-inch paring knife
  • A knife block (often with the Granitestone visual styling)

Some configurations include additional pieces like a 6-inch boning knife or kitchen shears. The exact piece count varies by retail version.

The Non-Stick Coating: Does It Work?

What the Coating Does

The non-stick coating on NutriBlade knives serves the same purpose as the coating on Kuhn Rikon and other coated knives: reducing the friction between the blade face and food during cutting. This is most noticeable when slicing:

  • Cheese (particularly soft or semi-firm varieties)
  • Avocado
  • Potato and other starchy vegetables
  • Cucumber
  • Cooked meat

Food that would normally stick and need to be manually removed from the blade slides off more cleanly with the coating.

Durability of the Coating

This is the main limitation of coated knives. Non-stick coatings on knife blades are not permanent. With regular use, the coating gradually wears, particularly in the areas that contact the cutting board and where food slides off the blade.

Factors that accelerate coating wear: - Dishwasher use (harsh detergents and heat) - Metal-on-metal contact in drawers - Cutting hard, abrasive foods - Using the knife on hard surfaces like ceramic or glass cutting boards

Hand washing and proper storage extend coating life significantly. Even with ideal care, expect the coating to show wear after one to two years of regular use.

After the Coating Wears

When the coating wears, you're left with a standard stainless steel knife blade. The knives don't become unusable, they simply lose the non-stick benefit. This is the lifecycle of coated knives: enhanced performance initially, standard performance after coating wear.

Base Knife Quality

Steel

Granitestone doesn't publish specific steel alloy information for the NutriBlade line. Based on price, construction, and performance reports, the steel is in the standard budget stainless range, approximately 420 or similar at 54-56 HRC.

This is functional steel for home cooking, but on the softer end of the spectrum. Edge retention is limited compared to higher-quality alternatives.

Construction

The NutriBlade knives appear to use stamped construction. The handles are polymer with an ergonomic grip design that references Granitestone's cookware handle styling.

The overall build quality is consistent with the mid-budget category. No obvious structural weaknesses reported, but not the precision manufacturing of premium brands.

Granitestone NutriBlade vs. Alternatives

For a full comparison across the knife market, see our Best Kitchen Knives guide.

NutriBlade vs. Kuhn Rikon

Kuhn Rikon has been making coated knives longer and has a more established track record. Their Swiss quality standards mean more consistent production. Kuhn Rikon is generally considered the better choice if you specifically want coated knives.

NutriBlade vs. Victorinox Fibrox

Victorinox Fibrox doesn't have a non-stick coating, but the steel quality is meaningfully better. For cooks who don't have a specific problem with food sticking to blades, Victorinox's edge retention and durability outperform the NutriBlade set.

NutriBlade vs. Other Granitestone Cookware

Granitestone's cookware reputation is strong for the price. Their knives extend that accessible non-stick value proposition into cutlery. If you already own and like Granitestone pans, the knives fit naturally with the kitchen aesthetic and provide a matched set.

Who This Set Makes Sense For

The Granitestone NutriBlade set works best for:

  • Buyers who specifically want non-stick blades and work frequently with sticky foods
  • Cooks who already use Granitestone cookware and want visual coordination
  • Budget-conscious buyers who want more comprehensive coverage than Kuhn Rikon at similar prices
  • Gift buyers who want something different from the typical knife set

It's less appropriate for serious cooks who want maximum edge retention, buyers who will put the knives through demanding daily use, or anyone looking for a long-term investment in quality kitchen tools.

Maintenance to Extend Coating Life

Hand Wash Only

The most important step. Dishwasher detergent is the primary coating killer. Hand wash with mild dish soap, rinse, and dry immediately.

Use Wooden or Plastic Cutting Boards

Glass and ceramic surfaces accelerate coating wear significantly. Stick to wood or plastic.

Proper Storage

Use the included block or individual blade guards. Contact with other metal utensils in a drawer scrapes the coating.

Gentle Washing

Avoid abrasive sponges or steel wool. Soft dishcloths or sponges protect the coating.

FAQ

Is the Granitestone NutriBlade coating food safe? According to Granitestone, yes. Their cookware coatings are marketed as food-safe and PFOA-free. The knife coating follows the same approach.

How long does the non-stick coating last? With hand washing and proper storage, one to three years before noticeable wear. With dishwasher use, potentially a few months.

Are the knives still usable after the coating wears? Yes. They function as standard stainless knives after the coating wears. The non-stick benefit is lost but the knives remain structurally functional.

Can I sharpen NutriBlade knives? Yes. A standard pull-through sharpener works. Whetstone sharpening removes the coating along the edge area, which is unavoidable with edge resharpening but doesn't significantly affect the overall coating benefit.

Conclusion

The Granitestone NutriBlade knife set is a reasonable option for buyers who specifically want non-stick coated blades at an accessible price. The coating works as advertised for its intended purpose of reducing food sticking. The base knife quality is adequate for home cooking. The main limitation is coating durability, which requires hand washing and careful storage to maximize. For buyers who cook seriously and want long-term performance, the investment in quality steel from Victorinox or Wusthof serves better. For casual cooks who like the non-stick concept, the NutriBlade delivers its promised benefit.