Kitchen container - Stone
Opens Sunday
Starting bid
€ 1
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Expert
Selected by Ger van Oers
Owned an antiques and curio shop with a large international network.
Estimate € 150 - € 230
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Description from the seller
This is an authentic Japanese natural finishing whetstone sourced from the Umegahata area, Kyoto Prefecture, one of the most historically respected regions for high-grade natural sharpening stones.
The stone shows classic Uchigumori (巣板) characteristics, visible in the layered structure and natural patterning across the surface. These stones are traditionally used for the final finishing stage of Japanese blades, where sharpness, edge refinement, and cutting feel are critical.
With an estimated grit range of #10,000–#12,000, this stone is well suited for professional use on Japanese kitchen knives, woodworking tools, and edged tools, delivering a refined, clean edge with excellent feedback.
The hardness is rated 4.5 / 5, offering a stable surface with minimal slurry generation. It can be used effectively without a nagura stone, making it practical for experienced sharpeners who prefer direct stone-to-blade contact.
No problematic lines or cracks affecting performance are observed. Natural inclusions are present and typical for genuine stones of this type, but they do not interfere with sharpening performance.
Specifications
Origin: Umegahata, Kyoto Prefecture, Japan
Type: Natural finishing whetstone
Layer / Structure: Uchigumori (巣板)
Estimated Grit: #10,000 – #12,000
Hardness: 4.5 / 5
Slurry: Low (does not require nagura)
Streaks / Lines: No performance impact
Dimensions:
Length: approx. 76 mm
Width: approx. 45 mm
Thickness: approx. 27 mm
Condition
Good vintage condition.
Natural wear, coloration, and surface character consistent with authentic Japanese natural stones.
Please review all images carefully, as they form part of the description.
Why This Stone Matters
Natural finishing stones from Kyoto are no longer actively quarried in the traditional sense, making each genuine piece increasingly scarce. Stones from the Umegahata / Nakayama lineage are especially sought after by professional sharpeners and collectors for their balance of refinement, feedback, and cutting performance.
This piece is ideal for users who value authentic Japanese sharpening tradition and demand precise, controlled finishing results.
This is an authentic Japanese natural finishing whetstone sourced from the Umegahata area, Kyoto Prefecture, one of the most historically respected regions for high-grade natural sharpening stones.
The stone shows classic Uchigumori (巣板) characteristics, visible in the layered structure and natural patterning across the surface. These stones are traditionally used for the final finishing stage of Japanese blades, where sharpness, edge refinement, and cutting feel are critical.
With an estimated grit range of #10,000–#12,000, this stone is well suited for professional use on Japanese kitchen knives, woodworking tools, and edged tools, delivering a refined, clean edge with excellent feedback.
The hardness is rated 4.5 / 5, offering a stable surface with minimal slurry generation. It can be used effectively without a nagura stone, making it practical for experienced sharpeners who prefer direct stone-to-blade contact.
No problematic lines or cracks affecting performance are observed. Natural inclusions are present and typical for genuine stones of this type, but they do not interfere with sharpening performance.
Specifications
Origin: Umegahata, Kyoto Prefecture, Japan
Type: Natural finishing whetstone
Layer / Structure: Uchigumori (巣板)
Estimated Grit: #10,000 – #12,000
Hardness: 4.5 / 5
Slurry: Low (does not require nagura)
Streaks / Lines: No performance impact
Dimensions:
Length: approx. 76 mm
Width: approx. 45 mm
Thickness: approx. 27 mm
Condition
Good vintage condition.
Natural wear, coloration, and surface character consistent with authentic Japanese natural stones.
Please review all images carefully, as they form part of the description.
Why This Stone Matters
Natural finishing stones from Kyoto are no longer actively quarried in the traditional sense, making each genuine piece increasingly scarce. Stones from the Umegahata / Nakayama lineage are especially sought after by professional sharpeners and collectors for their balance of refinement, feedback, and cutting performance.
This piece is ideal for users who value authentic Japanese sharpening tradition and demand precise, controlled finishing results.
Details
Era
1900-2000
Specific region of origin
Japanese Natural Finishing Whetstone Nakayama Uchigumori Lv 4.5 Kyoto
No. of items
1
Country of Origin
Japan
Material
Stone
Condition
Good condition - used with small signs of ageing
Height
76 mm
Width
45 cm
Depth
27 mm
Estimated Period
1950-1960
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