Ohira Suita Koppa Raw

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. Many miners are reportedly concerned about the long-term supply of quality uchigumori stones. Because of the superior quality of Ohira suita and uchigumori, it is not uncommon for stones from other mines to be stamped or sold as Ohira.