TSUSHIMA Nagura

The Tsushima Nagura natural whetstone is an excellent choice even for beginners looking to explore Japanese natural stones (JNAT). The stone comes from Tsushima Island, located off the western coast of Japan, known for its high-quality sharpening stones.

Specifications

• Origin: Tsushima Island, Japan
• Material: Ultra-fine quartz stone
• Grit level: Approx. 5000–6000 (synthetic equivalent)
• Length: 205 mm
• Width: 75 mm
• Thickness: 25 mm
• Weight: 1100 g

Natural stones are never perfectly symmetrical – corner chips are common in JNATs. However, the sharpening surface is always smooth and ready to use.

Usage:

Tsushima stone is dense and homogenous, making it perfect for finishing. Its hardness also makes it suitable for razor sharpening. The stone is fully lacquered, with only one surface left open for use. Do not soak the stone – the lacquer minimizes water absorption but cannot withstand immersion.

I’ve used this stone to finish filleting knives, clipper blades, and other straight-edged tools.

Benefits:

• Versatile: Ideal for finishing and various sharpening needs
• Durable: Long-lasting, high-quality natural stone
• Traditional Craftsmanship: Respected by professionals and artisans

Why choose Tsushima Whetstone:

The Tsushima natural stone offers a unique sharpening experience rooted in centuries-old Japanese craftsmanship. Its exceptional quality and performance make it ideal for both professional chefs and enthusiasts.

We recommend TSUSHIMA Nagura Cube alongside this product for creating a stronger surface slurry.

NOTE!

"Splash-and-Go" stones do not tolerate prolonged storage in water. Use water only as much as the stone requires. Do not submerge the stones in a water basin. After sharpening, immediately wipe the stone clean with a towel. This keeps the stone looking tidy and initiates the drying process. Place the stone where it does not touch a solid surface. Let the stone dry horizontally, for example, by placing it over a pen. Allow the stone to dry slowly and peacefully without additional heating. Do not expose the stone directly to sunlight, and do not let the stone freeze while damp. The drying process takes more than a day. Store the stone protected from impacts, for example, in its box without the possible original foam padding. Please do not put the stone in a plastic bag while still damp.