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Naniwa Professional (Chosera) Whetstone Sharpening Stone, 1000 grit

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Naniwa Chosera 1000 Grit Japanese Whetstone Sharpening Stone, NO stand/base, 20cmx7cm surface, 2cm thick. Made in Japan.

This semi-fine stone is used for prepping a final edge. This will smooth out the initially rough edge left by by a coarse stone or will return the burr for final finish with a fine 5000 grit stone.

Note: Naniwa has re-branded these as Chocera Pro (yes, changing the spelling to Chocera with a "c" now) for 2024. The stones are identical, just the branding/name and packaging has changed (again). You may receive the new or old packing as we receive and make the transition to new stock from the factory in Japan.

Naniwa Professional stones are widely considered the finest stones money can buy. They are the next generation of the superb Chosera stones (which they replace), promising even faster cutting. They are artifical stones made with the magnesia bonding method. In terms of hardness they are slightly harder than the Super Stones, and because of the different bonding methods these "feel" harder and cut more quickly. They are very durable and long-lasting, but this extra hardness means that there is also more of a potential for cracking or chipping than with the Super Stones so be sure to air dry them and store in a cool, dry place and do NOT expose them to extremes of heat or cold (NO freezing!) or quick changes in temperature or humidity.

Do NOT soak them, and do NOT leave them soaking in water while you use other stones... in use, just splash more water on the stone as needed instead of prolonged and repeated soakings, otherwise hairline cracks can appear over time.

If you're not a regular user of your stones and only want them for occassional home use, we suggest that you consider the Super Stones or Traditional Stones instead, as they are still very high quality but are more forgiving of the cycle of wet/dry and extreme temperature and humidity changes in our climate. The Pro Stones fare better with regular use and regular lapping to avoid potential problems with cracks forming.

Warranty: 90-day warranty against manufacturing defects.

Customer Reviews

Based on 4 reviews
Peter Nowlan
One Stone to Rule Them All

I’ve been using this stone professionally for over a decade. As a pro sharpener and one obsessed with stones this is a prized possession. If I could only have one Japanese Water Stone this is it. It’s feedback, performance and ease of maintenance (dishing/water) is second to none. I can’t recommend it highly enough for anyone, from novice to pro and everything in between. You need this water stone. It’s just part of the sharpening journey, a big part, one you don’t want to miss.


Stone got good feedback and dishes very slowly, gonna use this for a long time. Love the secure packaging, shipping speed and competitive prices. Best place to buy sharpening equipment, thanks!

Great stone, great service

Stone arrived earlier than expected. No problems on delivery.
The stone itself is awesome! Really helping me get a screaming edge on even my not-so-great knives.

J. Gunn
Paul's is the finest

Gold standard in synthetic stones at a great price. Excellent service fast shipping and securely packed. The stone is velvet, cuts well and has awesome feedback.

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