Ohira Lv 4 Japanese natural sharpening stone

Ohira (大平, Oohira, Ohirayama)
Western mine, famous for the quality of Uchigumori and Suita. Although the mine is still occasionally worked, exportable uchigumori and Ohira suita are increasingly difficult to find. Because of the superior quality of Ohira suita and uchigumori, it is not uncommon for stones from other mines to be stamped and sold as Ohira.