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  • Japanese Knife
    • Gyuto
    • Sujihiki
    • Santoku, Nakiri, Pete
  • Whetstone & Diamond stone
    • ALTSTONE
    • Natural whetstone
    • ATOMA DIAMOND STONE
    • SUEHIRO
    • OTANI Toishi
    • SHAPTON 
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  • Japanese Knife
    • Gyuto
      Sujihiki
      Santoku, Nakiri, Pete
  • Whetstone & Diamond stone
    • ALTSTONE
      Natural whetstone
      ATOMA DIAMOND STONE
      SUEHIRO
      OTANI Toishi
      SHAPTON 
  • Accessory
  • Journal
  • Contact
  • Journal

    ⑧Are SG2 and R2 Powder Steel Knives Difficult to Sharpen?
    October 5, 2026
    ⑦Honing Rod vs Whetstone: What’s the Difference? How to Use Each to Keep Your Knife Sharp
    September 14, 2026
    ⑥Best Whetstones and Sharpening Methods for Outdoor Knives The Right Approach for Different Blade Grinds and Steel Types
    September 7, 2026
    ➄ALTSTONE FUKAMI vs RIN|Which Whetstone Should You Choose?
    August 21, 2026
    ④Why Is My Knife Still Dull After Sharpening? How to Find the Cause
    August 14, 2026
    ③Which ALTSTONE Sharpening Stone Should You Choose?
    August 13, 2026
    ②Which Sharpening Stone Grit Should You Choose? A Beginner’s Guide 
    August 12, 2026
    ①The Story of ALTSTONE — Carrying Japan’s Sharpening Stone Culture into the Future 
    August 12, 2026

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    Frequently asked questions

    What is the return policy?

    Our goal is for every customer to be totally satisfied with their purchase. If this isn’t the case, let us know and we’ll do our best to work with you to make it right.

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    We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.

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    Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.

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    Shipping is calculated based on your location and the items in your order. You will always know the shipping price before you purchase.