Mizukihara Uchigumori Japanese Natural Toishi Whetstone

This exceptional Japanese whetstone was selected and purchased by us directly from Japan, then thoroughly tested and coated with cashew lacquer on sides and back to protect the stone for long term use.
It measures 163 mm (6.42 inches) long × 56 mm (2.20 inches) wide × 20 mm (0.79 inches) tall, and weighs 502 g (1.11 pounds).

Hardness 4
This Hard Uchigumori is an extremely high performance stone. There are a couple lines on the surface but after extensive testing and trying to get the lines to scratch, they didn't affect honing or polishing. This stone has a light blue base with beautiful orange Yaki and pink Renge with Namazu. The stone is perfect for razors with its hard base and fast cutting properties. The stone does not self slurry when honing Kamisori on water only. The honing sensation is smooth and fast moving. The stone will cut with water only producing inky black swarf. When slurried, the texture becomes very interesting with lightly granular and consistent pink mud. The honing sensation is whispy and user friendly with audible and tactile progress easily read and understood. The stone is perfect for bridging the gap between medium grit and can be used for final finishing as well. For knife polishing, the stone has a wonderful cushioned feel which makes the stone very user friendly for its hardness. There is little to no self slurry and the stone is very inky. Despite being hard, the stone still produces a deep, dark but shiny Jigane and white, shiny Hagane. Very high quality Uchigumori for an affordable price.

A photo of the stone's polishing ability on a high quality Japanese kitchen knife is shown.