Sharpening Stones

Size: (210x70x20 mm) (8.25x2.75x.80 in.)
The higher grit allows this stone to be used for both sharpening and polishing. However, it shouldn't be used as just a polisher. Since the grain count is higher than 6000, this waterstone will finely tune the edge of your knife allowing it to be sharpened and polished. Do not soak, just a splash and go.
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Naniwa’s Traditional Water Stones are specially designed for sharpening hard steels commonly found in woodworking tools and select specialty knives. This Hard Steel series runs parallel to Naniwa’s Standard Traditional Stones but is engineered for enhanced performance on tough steels. Featuring a harder binder, these stones provide a more aggressive sharpening action while minimizing wear, making them ideal for the unique demands of hard steel applications. 8000 Grit: This 8000 grit stone is extremely fine. This is a wonderful final stage for fine cutting knives or tool edges. Learn More

Naniwa Super Stones require no soaking, just a splash and go.
Whereas the 1000 grit is normally considered the starter stone for an undamaged knife, if you're doing a lot of sharpening and want to save time, the 800 is faster. You can then skip the 1000 and move directly to a 3000 grit. No need to soak the stone, just splash and go. Learn More

Naniwa Professional Stones (formally known as Chosera) utilize Magnesia in their bonding agent; giving these stones a longer life and faster sharpening capabilities. These stones are ceramic and do not require soaking. Splash and go. Learn More

Achieve the Ultimate Cutting Edge with Unrivaled Precision For the sharpener who demands the pinnacle of performance and a flawless finish, the Naniwa 6000 Grit Diamond Sharpening Stone represents the apex of modern sharpening technology. This is not a traditional water stone; it is a precision tool designed to take an already sharp edge to a level of breathtaking, hair-whittling refinement. It's the ultimate step for creating a true mirror polish and a silky-smooth, razor-sharp edge. The power of this stone lies in its construction. A dense layer of monocrystalline diamonds is electroplated to a perfectly flat steel plate, creating a cutting surface that is incredibly fast, durable, and will never dish or warp. Unlike water stones that require soaking, the Naniwa Diamond stone is a true "splash-and-go" system. Most importantly, its hardness makes it exceptionally effective on the most challenging, wear-resistant modern steels (like ZDP-189, M390, and S90V) that can be slow to abrade on conventional stones. Use the 6000 grit stone as your final step to remove the finest scratches from lower grits and burnish the edge to a stunning, frictionless polish. The result is an edge that glides through ingredients with zero effort, providing the cleanest possible cuts and maximizing edge retention. Learn More

The Naniwa Professional 600 Grit Ceramic Stone cuts quickly making this a great first stone to quickly sharpen knives that are very dull or made from very hard steels. This is also an ideal stone for fixing small imperfections.This stone cuts quickly without removing an excess of material or leaivng an overly rough edge. The edge coming off of this stone is smooth enough to transition immediately to a 2000 or 3000 grit stone. While this stone is a bit too aggressive for daily use, this is a great stone to have in your arsenal when you need to sharpen quickly. This is a good choice for someone who is comfortable with their sharpening technique and wants to work quickly.  Size: 8.25 inches x 2.75 inches x 0.8 in. inches (210 mm x 70 mm x 20 mm) Learn More

Naniwa Diamond Sharpening Stones are uniquely made by taking the diamond aggregate and mixing with a 1mm thick bonding layer on a sturdy metal base. This ensures even distribution and constant cutting surface, every time, throughout the life of the stone. Used for very hard steel blades and ceramic blades. Learn More

The material is made from a new resin bonding agent which allows for a higher concentration of abrasive particles. The higher abrasive levels enhance the tactile feel of the stone while improving the time of sharpening. Learn More

Naniwa Professional Stones (formally known as Chosera) utilize Magnesia in their bonding agent; giving these stones a longer life and faster sharpening capabilities. These stones are ceramic and do not require soaking. Splash and go. Learn More