Konosuke Sumiiro Gyuto 210mm

Regular price £270.00

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A striking mid sized gyuto designed with a bit of extra heel height and spine thickness to make it feel sturdy but without compromising on looks or performance. 

This knife is sold with a Konosuke wooden saya designed specifically to fit included in the price.

First Impressions

The Sumiiro was designed to be slightly taller at the heel and thicker at the spine than other Konosuke knives but without compromising on the performance you'd expect from the very hard SLD steel core.


This is undoubtely a stunning range. The black nashiji finish gives a nod to the black calligraphy ink used throughout the centuries in Japan while the core steel is polished to a fantastic mirror finish. 

It's then paired with a D shaped burnt chestnut handle that both compliments and contrasts the blade. It's a striking knife in every respect.

In Hand

Because of that taller and thicker profile the sumiiro is feels sturdy in hand but remains light, nimble and well balanced while the d-shaped handle has just a little texture in the finish to give a tactile finish in hand.


The SLD core steel takes and holds a great edge and has been hardened to a high level of 65HRC so it's going to last and offers exceptional edge retention.

Ease of Care

SLD is close to being stainless so caring for it is pretty straightforward if you just follow the normal care instructions for any Japanese knife.

Sharpening knives at this level of hardness can require a little more time and effort than lower hardness steels but the tradeoff is the edge retention is improved and you'll find you need to resharpen less.

As this is a minimally reactive steel, we'd recommend a Japanese knife care kit for long term maintenance.

Our Verdict

The Sumiiro range boasts a superb level of performance and edge retention and the workhorse profile combined with the very thin edge glides through food. 

Konosuke's attention to detail shows through in these beautifully made knives made by top blacksmith Takahiro Nihei.

Product Quick View

Want to see a little more of the knife? Check out what the knife looks like in hand and up close.

Product details

  • Blade Length: 213mm (Measurement of the cutting edge)
  • Total Length: 363mm (Blade tip to handle end)
  • Blade Height: 46.3mm (Heel to spine)
  • Blade Thickness: 3.63mm (Spine width above the heel) 2.47mm (Measured halfway along spine) 1.49mm (Measured 15mm from tip)
  • Total Weight: 148 grams
  • Core Steel: SLD
  • Cladding Steel: Stainless
  • Hardness: 65 (HRC)
  • Handle Style: Japanese
  • Handle Material: D shaped burnt chestnut
  • Left or Right handed: Either (Double Bevel)

Product SKU: KONO-016-##

Our aim is to measure and photograph our products as accurately as possible but due to many items being handmade, finished or using natural materials, there can be minor variance in measurements and things such as blade or wood finishes can vary. We will always endeavour to provide the most accurate measurements, photos and descriptions of our products.

Some measurements such as HRC are provided by manufacturers and should therefore be used as a guide.

Protection & care for this knife

This knife is sold with a Konosuke wooden saya designed specifically to fit included in the price.

Saya & Guards Knife Racks & Storage Sharpening & Blade Care

Meet the maker

Takahiro Nihei

A craftsman from the Fukushima Prefecture, Nihei trained for years in Sanjo to develop his skills. As is customary from that region, this means Nihei is responsible for all the forging, sharpening, and engraving on his knives.

Helping you find the perfect knives & accessories

Cutting Edge Knives is a family run business established in 2011 and based in the picturesque town of Holmfirth, West Yorkshire. We love the history and craftsmanship that goes into making Japanese chef knives and accessories and the excitement and enjoyment you experience when using a truly sharp knife in the kitchen.

Over many years we've helped thousands of happy customers find their dream knife and look forward to helping you too.

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