KYOKUHA is the original sharpening stone among NSK Ltd.'s diamond stones and has long supported the work of our sharpeners in Japan.

KYOKUHA is an ideal stone for sharpening all kitchen knives, including stainless steel, semi-stainless steel, and carbon knives. It is the softest of all NSK Kogyo Didiamond stones. For those who sharpen kitchen knives of various shapes and materials, who place importance on the sharpness of the cutting edge, and or for the first time using a Diamond Stone, KYOKUHA will be a very effective stone for you to use.



Product Type Diamond Sharpening Stone
Brand NSK Kogyo Ltd.
L 200mm x W 75mm x 26mm
Abrasive Thickness 3.5mm +

All type of kitchen knife, stainless, semi-stainless and carbon stainless knives, Softer texture than Oboro knife

Grit #200, 300, 400, 500-600, 800, 1000, 1500, 2000, 3000, 4000, 6000-8000, 10000, 16000

Take 1-3 Months+ to be Delivered for This Handmade Stone

NSK Kogyo's products are individually handcrafted by skilled craftsmen to produce the best diamond sharpening stones. All work is done by a single craftsman with the skills and knowledge he gained at the Japanese sharpening stone manufacturer where he worked for many years, requiring a lot of time to produce the products.
Currently, back orders are coming in from all over the world, not just Japan, so it is taking time to manufacture. If you wish to order, please place your order in Pre-Order.

We guarantee that you will receive the best diamond sharpening stone for your waiting.