Chinese Bluestone for KME - Gritomatic

Chinese Bluestone for KME

For Hapstone and KME knife sharpeners (KME format)

Country of origin: China China

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Chinese Bluestones are used for finish sharpening knives using KME or Hapstone knife sharpener. Estimated grit for Bluestone is approximately 5000 JIS.

Chinese Bluestones stones are universal, and can be used to sharpen knives of any steel.


  • Working surface: 100 x 25 mm (4" x 1")
  • Weight: 40 g (1.5 oz)
  • Estimated grit: 5000 JIS
  • May have slight natural imperfections; this is not a defect.

How to use

Chinese Bluestone is preliminary lapped and does not require lapping after purchase.

Chinese Bluestone should be used with water as lubricant. Soak Bluestone in the water for 2 minutes before use.

About Gritomatic

Gritomatic is not just an online shop. This private brand is a collection of high-quality, custom-made sharpening products. Gritomatic offers natural and synthetic stones, empty blanks and leather.

Product reviews

Questions and answers

If you have a question regarding this product, please feel free to ask.

Grit chart

Courtesy of Mr. Wizard. Please read chart explanation in README.