Shohonyama Japanese Natural Whetstone — Certified Chō-Tokkyū Super-Grade (1,700g)
Approx. 206 × 74 × 47 mm
An authentic, premium Japanese natural finishing stone from the legendary Shohonyama mines in Kyoto, Japan.
This exceptional vintage specimen bears the prestigious Junhonzan mark, the highly regarded Kyoto Motobetsusen (京都元別撰) label, and the rare Chō-Tokkyū (Super-Grade) certification seal, representing the highest tier of traditional Kyoto natural whetstone selection.
Characterized by its hard composition and extra-fine grain structure, this stone delivers outstanding sharpening performance, crisp tactile feedback, and a beautifully refined Kasumi finish.
Its elegant light grayish-beige surface reveals a subtle purplish hue when wet, highlighting the stone's dense and uniform abrasive structure. The stone has been professionally performance-tested; during preparation, the original seal on the sharpening face was removed during lapping (reference photo included).
Specifications & Features
Origin: Yamashiro-no-Kuni, Shohonyama (Kyoto, Japan)
Type: Shohonyama Natural Finishing Stone
Certification:
• Junhonzan Mark
• Kyoto Motobetsusen (京都元別撰) Label
• Chō-Tokkyū (Super-Grade) Seal
Dimensions: Approx. 206 × 74 × 47 mm
Weight: 1,700 g
Hardness: Hard / Extra-Fine Grain
Condition: Unused / Performance Tested
(Professionally lapped and verified; sharpening-face seal removed during testing)
Protection: Sides and bottom sealed with Ishisan premium water-based protective lacquer
Performance & Application
• Crisp and highly responsive sharpening feedback
• Dense, uniform abrasive structure for precise edge refinement
• Produces exceptionally sharp and durable cutting edges
• Creates a refined and elegant Kasumi finish
• Excellent control during final-stage sharpening
• Ideal for users seeking high precision and consistency
Recommended For
Kitchen Knives
Achieving refined Kasumi finishes and exceptional sharpness on premium Japanese and Western knives.
Carpentry Tools
High-precision finishing for chisels (Nomi), plane blades (Kanna), and other woodworking tools.
Straight Razors
Ultra-fine honing and delicate edge polishing for razors and precision cutting instruments.
Collectors
An officially certified, investment-grade vintage masterpiece with strong historical provenance.
Collector's Note
Natural whetstones bearing the Junhonzan, Kyoto Motobetsusen, and Chō-Tokkyū designations are increasingly scarce and represent some of the most respected selections within Kyoto's whetstone tradition.
The combination of official certification, vintage provenance, exceptional sharpening characteristics, and substantial size makes this a highly desirable acquisition for serious collectors and advanced users alike.
Authentic Shohonyama Japanese Natural Whetstone — Certified Chō-Tokkyū Super-Grade.
Featuring Junhonzan, Kyoto Motobetsusen, and rare Chō-Tokkyū certifications.
Premium 1,700 g vintage specimen from Kyoto, Japan.
A collector-grade and professional-use Japanese natural finishing stone representing the pinnacle of traditional Kyoto whetstone craftsmanship.
