Assorted Aiiwatani 400-600 Grams Small Benchstone or Wide Faced Square Tennen Toishi Honyama Natural Finishing Stone

Koppa are small sized or oddly shaped stones that are cut from the same stock and preform the same as larger more regularly shaped premium stones but are far less expensive. These prices are lower than usual as they are not individually graded, they are all good for knives mostly in the LV 3.5-4 range of hardness and fineness.

a few of these have toxic lines cut out or irregular bottoms that might need gluing to a base.

Aiiwatani:

A ‘Higashi-Mono’ (Eastern Mine) whetstone that is close in proximity to Takashima and Wakasa, two mines known for their high density stones.

Please note:

These koppa stones have been graded by us by weight and geometry only, they have not been individually graded by hardness and fineness, koppa are sold at random only, we will not select individual stones from the photo. For individually graded stones please see our other listings.