Japanese Natural Whetstone – Iyo Meito (伊豫銘砥) – Rare Vintage Finishing Stone – 673g Offered here is an authentic Japanese natural sharpening stone (Tennen Toishi) labeled Iyo Meito (伊豫銘砥), a traditional whetstone originating from the historic Iyo region (present-day Ehime Prefecture, Japan). Natural Japanese stones from regional quarries are increasingly scarce, and Iyo stones are particularly appreciated for their smooth sharpening feel and refined finishing capability. This piece features a beautiful warm beige tone with elegant natural strata and subtle renge-like spotting, characteristic of quality sedimentary stone. The stone weighs approximately 673 grams, making it a manageable yet substantial size suitable for knives, woodworking tools, and straight razors. Performance Characteristics Fine finishing capability Smooth feedback on the blade Suitable for carbon steel and high-quality Japanese blades Ideal for knife collectors, chefs, woodworkers, and razor enthusiasts The natural layering visible on the surface indicates sedimentary origin, typical of traditional Japanese quarry stones. Such stones are no longer widely mined, increasing their desirability among sharpening enthusiasts and collectors worldwide. Item Description Product Name Natural Whetstone – Iyo Meito (伊豫銘砥) Type Japanese Natural Sharpening Stone Origin Iyo region, Japan (Ehime Prefecture) Material Natural sedimentary stone Weight Approx. 673 g Length Approx. 15 cm Width Approx. 7 cm Thickness Approx. 3 cm Condition Vintage condition with natural irregular edges and surface texture; no major cracks observed Accessories None