Ōhira Ipponsen 30-gata – 1670 g (approx. 207 × 77 × 40 mm) | Shohonyama Japanese Natural Finishing Stone
An authentic Japanese Whetstone (Natural Whetstone) from Kyoto’s Ōhira mine, classified under the prestigious Shohonyama standard — the hallmark of Japan’s highest-grade Finishing Stones (Awasedo).
This Rare Stone Ōhira Ipponsen 30-gata offers exceptional balance between hardness and polishing response, combining stability with refined finishing ability.
Medium-hard in composition, it provides smooth, controlled feedback and excellent polishing strength, producing a precise and elegant finish.
The sharpening surface is free of suji (lines) or chips, ensuring an even, consistent sharpening feel.
Though the original stamp was removed during professional lapping, the stone’s provenance and classification as Ōhira Ipponsen 30-gata have been verified at the source.
The back and sides are sealed with Ishisan (water-based protective coating) to ensure long-term preservation and prevent water absorption.
✨ Features
Origin: Ōhira mine, Shohonyama (Kyoto, Japan)
Type: Ipponsen 30-gata (natural finishing stone)
Size: 207 × 77 × 40 mm
Weight: 1670 g
Hardness: Medium-hard
Condition: Unused, lapped and ready to use
Surface: No suji, no chips
Coating: Back and sides sealed with Ishisan (water-based protective sealant)
🔪 Recommended for
Japanese and Western kitchen knives, chisels, plane blades, carving tools, and razors.
A Natural Stone shaped by Kyoto’s Traditional Craft, combining fine polishing performance with exceptional reliability.
Perfect as an Original Gift or Unique Gift, this One of a Kind Ōhira Ipponsen embodies both practical excellence and collector-grade value.
