Naniwa Aotoshi 2K Green Brick

What many users affectionately call the “Green Brick of Joy,” the Naniwa Aotoshi 2000 is a versatile medium stone that punches well above its grit rating. It cuts quickly, refines efficiently, and leaves an edge noticeably sharper than most factory finishes, making it an excellent bridge between coarse stones and finer polishers. At 210 × 70 × 55mm, it’s a generously sized stone that offers long life and consistent performance for both home cooks and frequent sharpeners.

In real-world use, this stone shines for edge refinement after coarse work, especially on common stainless steels. It produces a surprisingly refined, semi-polished edge—often compared to higher-grit stones—while maintaining excellent bite and cutting performance. Burr formation is subtle but controlled, removal is easy even on softer steels, and the stone delivers a smooth, velvety sharpening feel that many users find immediately confidence-inspiring.

With an average rating around 4.7 stars, customers consistently praise this stone for its versatility and feel. Many note it cuts closer to a 1K stone with a wet surface but can finish like a 3K–4K as it dries, giving it a uniquely wide working range. Reviewers also highlight its excellent feedback, large size, and ability to produce a refined, high-performing edge on both Western and Japanese knives. Some mention it dishes a bit faster than harder stones, but most agree the performance and enjoyment more than make up for it.

Care Instructions: This is a splash-and-go stone—no soaking required. Add water as needed during use and keep the surface clean to maintain cutting speed. Allow the stone to air dry completely after sharpening. Flatten periodically to ensure consistent performance and even wear.

Grit: 2000 (Performs Above Rating)

Dimensions: 210 × 70 × 55 mm

Type: Splash-and-Go Water Stone

Best Use: Edge Refinement and Finishing

Feedback: Smooth, Velvety Feel