Product Summary: This is an authentic Japanese natural whetstone (JNAT) from the historic Nakayama quarry (加藤鉱山 - Kato Mine) in Kyoto, from the specialized Hachimai (八枚) layer. It is a traditional hard finishing stone (Shiage-to) with an exceptionally fine, delicate abrasive character. This stone is highly recommended for the ultimate final edge-refining of kitchen knives, carpenter tools, and razors.

Condition: Pre-owned in near-unused, excellent cosmetic condition. The face proudly displays the authentic "中山合砥" (Nakayama Awasedo) and "加藤鉱山" (Kato Mine) stamps. Structurally, it features a unique, distinctively thick block-like form (43mm in thickness) with an irregular coppa shape. Natural character lines and coloration are present on the surface. Please review all photos carefully to confirm the unique dimensions and surface details.

Specs:

• Type: Finishing Whetstone (Shiage-to) / Awasedo

• Origin: Nakayama (Kato Mine), Kyoto, Japan

• Layer: Hachimai (八枚)

• Dimensions: 97mm × 50mm × 43mm

• Weight: 456g

• Texture: Very hard feel (Recommended for experienced users)

Important Notes:

• The photos show the actual item.

• As this is a natural stone, patterns, lines, color variations, and surface differences may be present.

• This is a pre-owned item sourced in Japan.

• Please check all photos carefully before purchasing.

• The condition is based on the photos and available seller information.