This stone  has a large surface, but rather thin. It will still last a very long time since it wears slowly.
Nakayama natural stones like this is good for kasumi polish, sharpen razors and it also give kitchen knives an edge with great bite.

The finish becomes silky matte on a kiridashi with iron clad.

Dimensions: 210 x 133 x 9 mm

Weight: 411 grams

Note: Natural stones have no guarantees against cracking.