The abrasive coating was completely worn away in less than a dozen sharpenings. I don't claim to be a master grinder, but this "stone" decayed immediately. However, this stone wears away material very quickly. This seems to be most useful when you have a surprisingly dull knife that requires a lot of work. Then use other, much less aggressive stones.
Sharpening stone Hatamoto HT0960, green
22 Review
π Enhanced Superfine Assortment: Various Sizes, Multi-purpose, and Reusable
10 Review
USA Made Diamond Lapping Paste Polishing Compound 600 Grit Mesh 22-36 Microns For Rock Glass Metal Jewelry Resin Marble With High Concentration Of Diamond Powder By TechDiamondTools
30 Review
Lansky 2D2C Diamond Ceramic Four: Ultimate Sharpening Solution for Precision
13 Review