Thank you for viewing. This is a rare Hakusuita (white Suita) natural finishing whetstone from Hideriyama (日照山), located further west than the Tamba mountain range in Kyoto, Japan.
The quarry has already been closed, and no more stones will be produced.
This stone is slightly soft with a wide sharpening face, making it especially well-suited for finishing traditional Japanese kitchen knives such as Yanagiba and Deba, producing a smooth kasumi (foggy) finish.
✨ Features
Origin: Hideriyama, Japan
Type: Hakusuita (白巣板 / white Suita)
Weight: 1112 g
Size: approx. 190 × 85 × 30 mm
Hardness: Slightly soft
Condition: Minor side repairs, sharpening surface intact
Coating: Back and sides sealed with Ishisan (water-based protective coating)
🔪 Recommended for
Yanagiba, Deba, and other Japanese kitchen knives
Kasumi finish for sashimi knives
General finishing and polishing work
This stone is highly collectible as production has ended, making it rare and valuable for both practical use and collection.
