Atoma Diamond 4️⃣Stone Set 6" x 1"



Abrasive Synthetic monocrystalline diamonds
Bonding Electroplated coating
Compatibility Cannot be used with magnet-based Hapstone sharpeners
Country of Origin Japan
Extra Material Mounted on aluminum blank
Form Factor Edge Pro
glgc atoma
Grit Composition 📊 Grit Chart
140 JIS XC
400 JIS M
600 JIS M
1200 JIS F
Lubricant Water
Thickness of Abrasive coating
Total Thickness 4 mm
Working Surface 150 x 25 mm (6" x 1")


Atoma Diamonds are used for sharpening knives on Hapstone, TSProf and Edge Pro knife sharpeners. Edge Pro format stones of Atoma are made by Jende Industries.

Atoma Diamond consists of a diamond-bearing nickel plate mounted on the high-quality aluminum blank. In contrast to regular coated diamonds, all diamond particles in Atoma are gathered into a cluster pattern. This approach gives Atoma diamonds higher sharpening performance in comparison with any other diamonds.

Atoma Set consists of 4 diamonds: 140, 400, 600, and 1200 grit.

Note. Atoma cannot be used on magnet-based Hapstone knife sharpeners.