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JCK Natures

JCK Natures Gekko Series GE-6M Sujihiki 240mm (9.4 inch)

Availability: Normally ships the same day

From my first glance of this beautiful knife, I knew it should be called "Gekko”, or 月光, which means "Moonlight" in Japanese. From every angle, the Gekko knife reminded me of the way that the shape and light of the Moon changes each night.

Gekko knife has a unique & beautiful Tsuchime (“Hammered pattern”) textured Damascus blade. They feature a hand sharpened and hand honed VG-10 stainless steel blade core that is clad on both sides by a 15-layer Damascus stainless steel (HRc. 60-61. 50/50 symmetrically ground double beveled edge).

Gekko knife uses a full-tang construction, and has Mahogany wood handle with a stainless steel bolster and handle rivets.

The long, narrow, graceful blade of the Sujihiki is particularly useful for trimming away sinew and fat from meat, finely slicing meat or boneless fish, or for filleting and skinning fish. The long blade allows the meat or fish to be cut in one single drawing motion, from heel to tip.

Knife Model: JCK Natures Gekko Series Sujihiki

Blade Material:  VG-10 Damascus

Rockwell Hardness (HRc): 60 to 61

Blade Grind and Edge Shape: Double Bevel Edge 50/50

Handle Material: Mahogany Wood Handle with Stainless Steel Bolster

Saya Included: No.


Sujihiki 240mm (9.4")
Cutting edge length: 245mm (9.6")
Total Length: 365mm (14.3")
Blade Thickness: 2mm (0.07")
Blade Width: 37mm (1.4")
Handle Length: 118mm (4.6")
Total Weight: 190g (6.7oz)



This knife comes with 50/50 double bevel edge geometry for both right and left handed use.

For your information, Japanese Kitchen knives are generally designed for right hand use with a slightly thicker and rounded grinding on the right side blade and a less rounded (almost straight flat) grinding on the left side blade. However, both right and left hander can use the knives that have double bevel edge sharpened 50/50 without problems.  

We believe quality and performance of Japanese knives are best in the world and hope you enjoy fine craftsmanship and spirits from your new knife. With proper cares, every Japanese knife can be your special cooking partner for long time.



This is the Stainless steel blade kitchen knife, which has good rust resistance for easy maintenance. However even stainless steel blade kitchen knife has rust situation if you leave it with wet condition.


  • Before starting to use the knife, please wash it with water for cleaning up.
  • Please do not put this knife in the dishwasher, please hand wash.
  • Please do not leave this knife in water or wet condition for long time.
  • After using, please hand wash it and wipe it clean and dry with soft clothes. (Includes bolster and handle part)
  • This is an extremely sharp knife. Please use special cares in using and storing it.
  • Unlike German made knives, Japanese knife blades are ground to thin cutting edge for sharper cutting and easier re-sharpening. Please protect the edge from hitting hard materials to avoid chipping or cracking.
  • Please do not use it to cut bone or frozen foods, hard foods such as lobster and crab which have hard surface.
  • We recommend re-sharpening the knife using Japanese whetstones, when it gets dull.
Customer Reviews
5.0 Based on 11 Reviews
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Filter Reviews:
    Alexander G.
    Poland Poland
    I recommend this product

    Very useful

    Excellent hand made job, ideal manufacturing. Very useful not only for fish or meat. Just handy knife for a lot if task in your home when you need a long blade. Cheap price, anti stick blade, my recommendation for sujihiki.

    JapaneseChefsKnife.Com JCK Natures Gekko Series GE-6M Sujihiki 240mm (9.4 inch) Review
    Frederich m.
    Italy Italy
    I recommend this product

    Beautiful knife at an affordable price

    The knife is beautiful, it is really sharp and the VG 10 core is easy to sharpen. I chose this knife because i was looking for a VG10 left handed yanagiba but after some reseach i understood that they don't exist and i found this beautiful knife . The knife is factory made (also the forged ones are made in factory, it is the name of the production method) , you can notice it easly when you have it in your hand, the feeling is different, the blade is really light and it doesn't "sound" as my other kinfes. The metal bolster is not a part of the blade like in a forged one but is a part of the hadle, but everything is well polished and you can barely notice it. The handle is very confortable. the knife is very sharp out of the box, sharper than my other knifes, so i need to buy a 3000 stone XD For the price is a beautiful knife, with and high level steel and a beautiful damascus. the handle is well polished and also the blade, there are not steps between the metal and the wood, i m impressed.

    nick g.
    United States United States
    I recommend this product

    JCK Sujihiki

    Love my new knife. All the knives I've purchased from JCK have been fantastic. Beautifully crafted and work like a dream.

    Jason L.
    United States United States
    I recommend this product

    Great Christmas Present

    Bought this knife for my brother-in-law for Christmas. Ordered the knife 12/20 and he got it 12/23. Awesome knife, awesome service, awesome company.

    Timothy C.
    United States United States
    I recommend this product


    The knife is nicely balanced and very sharp. I like the knife and the price point was nice as well.

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