This is a natural Japanese whetstone from the Iyo region, traditionally known as Iyo Tōishi (伊予砥石). The stone is identified as the “Autumn Leaves” (紅葉, Momiji) type, named for its warm coloration and natural patterning. Iyo whetstones are valued in Japan for their balanced sharpening characteristics and are typically classified as medium grit, suitable for general sharpening and edge refinement. As with all natural whetstones, performance may vary depending on blade material and steel composition. The stone measures approximately 130 × 70 × 25 mm and weighs about 454 g, making it a practical size for regular use. Please note that, due to its natural origin, the stone may be sensitive to temperature changes, humidity, or impact, and could crack if mishandled. After use, it is recommended to remove all moisture, wrap the stone in a cloth or towel, and store it in a dry, stable environment. Avoid exposure to water, frost, or sudden temperature fluctuations. This item is ideal for collectors, Japanese tool enthusiasts, or users seeking an authentic natural whetstone. Method of Shipment FedEx or Japan Post NOTICE The lot will be carefully packaged and shipped by FedEx or Japan Post. Delivery usually takes 1–2 weeks. Heavy items may be shipped by sea, which may take 1 to 2 months to arrive. The shipping method may vary depending on the item price and size. Sometimes Customs or the delivery company in your country may contact you by phone or email for clearance. Please make sure you are available to respond. If not, the parcel may be returned to me, and reshipping will cost more than twice the original shipping fee. I appreciate your cooperation.