This is a museum-grade extra-large Amakusa Tiger Stone (Nakato, medium grit) natural whetstone, weighing approximately 9.2 kg with dimensions of about 240 × 118 × 135 mm.
Stones of this monumental size are rarely seen outside of collections or museums. Traditionally valued as a medium-grit sharpening stone, Amakusa Tiger Stones are admired for their striking striations, strong cutting power, and durability.
Weight: approx. 9.2 kg
Size: approx. 240 × 118 × 135 mm
Type: Nakato (medium grit)
Quarry: Amakusa, Japan
Condition: Unused, long-term storage, washed for listing
A truly museum-grade specimen, ideal as a centerpiece for serious collectors of Japanese natural whetstones, or as a display piece representing the history of traditional toolmaking.
